Portal:Medicine

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The color fresco Care of The Sick by Domenico di Bartolo, 1441–1442, depicting the Santa Maria della Scala hospital in Siena, Italy

Medicine is the science and practice of caring for patients, managing the diagnosis, prognosis, prevention, treatment, palliation of their injury or disease, and promoting their health. Medicine encompasses a variety of health care practices evolved to maintain and restore health by the prevention and treatment of illness. Contemporary medicine applies biomedical sciences, biomedical research, genetics, and medical technology to diagnose, treat, and prevent injury and disease, typically through pharmaceuticals or surgery, but also through therapies as diverse as psychotherapy, external splints and traction, medical devices, biologics, and ionizing radiation, amongst others.

Medicine has been practiced since prehistoric times, and for most of this time it was an art (an area of creativity and skill), frequently having connections to the religious and philosophical beliefs of local culture. For example, a medicine man would apply herbs and say prayers for healing, or an ancient philosopher and physician would apply bloodletting according to the theories of humorism. In recent centuries, since the advent of modern science, most medicine has become a combination of art and science (both basic and applied, under the umbrella of medical science). For example, while stitching technique for sutures is an art learned through practice, knowledge of what happens at the cellular and molecular level in the tissues being stitched arises through science.

Prescientific forms of medicine, now known as traditional medicine or folk medicine, remain commonly used in the absence of scientific medicine and are thus called alternative medicine. Alternative treatments outside of scientific medicine with ethical, safety and efficacy concerns are termed quackery. (Full article...)

Featured articles -

Featured articles are displayed here, which represent some of the best content on English Wikipedia.

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  Georges Gilles de la Tourette (1857–1904),
  namesake of Tourette syndrome

  
  Tourette syndrome or Tourette's syndrome (abbreviated as TS or Tourette's) is a common neurodevelopmental disorder that begins in childhood or adolescence. It is characterized by multiple movement (motor) tics and at least one vocal (phonic) tic. Common tics are blinking, coughing, throat clearing, sniffing, and facial movements. These are typically preceded by an unwanted urge or sensation in the affected muscles known as a premonitory urge, can sometimes be suppressed temporarily, and characteristically change in location, strength, and frequency. Tourette's is at the more severe end of a spectrum of tic disorders. The tics often go unnoticed by casual observers.
  
  Tourette's was once regarded as a rare and bizarre syndrome and has popularly been associated with coprolalia (the utterance of obscene words or socially inappropriate and derogatory remarks). It is no longer considered rare; about 1% of school-age children and adolescents are estimated to have Tourette's, though coprolalia occurs only in a minority. There are no specific tests for diagnosing Tourette's; it is not always correctly identified, because most cases are mild, and the severity of tics decreases for most children as they pass through adolescence. Therefore, many go undiagnosed or may never seek medical attention. Extreme Tourette's in adulthood, though sensationalized in the media, is rare, but for a small minority, severely debilitating tics can persist into adulthood. Tourette's does not affect intelligence or life expectancy. (Full article...)
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  Four of the restaurants in The Dalles affected by the attack

  
  In 1984, 751 people suffered food poisoning in The Dalles, Oregon, United States, due to the deliberate contamination of salad bars at ten local restaurants with Salmonella. A group of prominent followers of Rajneesh (later known as Osho) led by Ma Anand Sheela had hoped to incapacitate the voting population of the city so that their own candidates would win the 1984 Wasco County elections. The incident was the first and is still the single largest bioterrorist attack in U.S. history.
  
  Rajneesh's followers had previously gained political control of Antelope, Oregon, as they were based in the nearby intentional community of Rajneeshpuram, and they now sought election to two of the three seats on the Wasco County Circuit Court that were up for election in November 1984. Some Rajneeshpuram officials feared that they would not get enough votes, so they decided to incapacitate voters in The Dalles, the largest population center in Wasco County. The chosen biological agent was Salmonella enterica Typhimurium, which was first delivered through glasses of water to two county commissioners and then at salad bars and in salad dressing. (Full article...)
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  Ray Fletcher Farquharson MBE (4 August 1897 – 1 June 1965) was a Canadian medical doctor, university professor, and medical researcher. Born in Claude, Ontario, he attended and taught at the University of Toronto for most of his life, and was trained and employed at Toronto General Hospital. With co-researcher Arthur Squires, Farquharson was responsible for the discovery of the Farquharson phenomenon, an important principle of endocrinology, which is that administering external hormones suppresses the natural production of that hormone.
  
  He served in the First and Second World Wars, earning appointment as a Member of the Order of the British Empire for his medical work during the latter. He chaired the Penicillin Committee of Canada and served as a medical consultant for the Royal Canadian Air Force. He was awarded the Queen's Coronation Medal in 1953 for his work for the Defence Review Board. Farquharson was also a charter member of the Royal College of Physicians and Surgeons of Canada. (Full article...)
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  Major General Rupert Major Downes, CMG, KStJ, VD, FRACS (10 February 1885 – 5 March 1945) was an Australian soldier, surgeon and historian.
  
  The son of British Army officer Major Francis Downes, Downes joined the Army as a trumpeter while he was still at school. He attended the University of Melbourne, graduating with his medical degrees in 1907 and a Doctor of Medicine degree in 1911. He was commissioned as a captain in the Australian Army Medical Corps in 1908, and after the outbreak of the First World War he joined the First Australian Imperial Force (AIF) in 1914 as its youngest lieutenant colonel. He served in the Gallipoli campaign, and was appointed Assistant Director of Medical Services (ADMS) of the newly formed Anzac Mounted Division in 1916, which he combined with the post of ADMS AIF Egypt. In 1917, he became Deputy Director of Medical Services (DDMS) of the Desert Mounted Corps. After the war, he wrote articles on medical aspects of the Sinai and Palestine campaign, and the section on the campaign for the Official History of Australia in the War of 1914–1918. (Full article...)
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  Debora Green (née Jones; born February 28, 1951) is an American physician who pleaded no contest to setting a 1995 fire that burned down her family's home and killed two of her children, and to poisoning her husband with ricin with the intention of causing his death. The case was sensational, and covered heavily by news media, especially in the Kansas–Missouri area, where the crimes occurred. Though Green has petitioned for a new trial twice in recent years, her requests have not been successful.
  
  Green married Michael Farrar in 1979 while practicing as an emergency physician. The marriage was tumultuous, and Farrar filed for divorce in July 1995. Between August and September 1995, Farrar repeatedly fell violently ill, and despite numerous hospitalizations his doctors could not pinpoint the source of his illness. Green's emotional stability deteriorated and she began to drink heavily, even while supervising her children. On October 24, 1995, the Farrar family home, occupied by Green and the couple's three children — Timothy (age 13), Kate (age 10), and Kelly (age 6) — caught fire. Debora Green and Kate escaped without harm. Despite the efforts of firefighters, Timothy and Kelly died in the blaze. Investigation showed that trails of accelerant in the house led back to Green's bedroom, and that the source of Michael Farrar's intractable illness had been ricin, a poison served to him in his food by Green. (Full article...)
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  Diagram of prostate tumor pressing on urethra

  
  Prostate cancer is the uncontrolled growth of cells in the prostate, a gland in the male reproductive system below the bladder. Abnormal growth of prostate tissue is usually detected through screening tests, typically blood tests that check for prostate-specific antigen (PSA) levels. Those with high levels of PSA in their blood are at increased risk for developing prostate cancer. Diagnosis requires a biopsy of the prostate. If cancer is present, the pathologist assigns a Gleason score, and a higher score represents a more dangerous tumor. Medical imaging is performed to look for cancer that has spread outside the prostate. Based on the Gleason score, PSA levels, and imaging results, a cancer case is assigned a stage 1 to 4. A higher stage signifies a more advanced, more dangerous disease.
  
  Most prostate tumors remain small and cause no health problems. These are managed with active surveillance, monitoring the tumor with regular tests to ensure it has not grown. Tumors more likely to be dangerous can be destroyed with radiation therapy or surgically removed by radical prostatectomy. Those whose cancer spreads beyond the prostate are treated with hormone therapy which reduces levels of the androgens (male sex hormones) that prostate cells need to survive. Eventually cancer cells can grow resistant to this treatment. This most-advanced stage of the disease, called castration-resistant prostate cancer, is treated with continued hormone therapy alongside the chemotherapy drug docetaxel. Some tumors metastasize (spread) to other areas of the body, particularly the bones and lymph nodes. There, tumors cause severe bone pain, leg weakness or paralysis, and eventually death. Prostate cancer prognosis depends on how far the cancer has spread at diagnosis. Most men diagnosed have tumors confined to the prostate; 99% of them survive more than 10 years from their diagnoses. Tumors that have metastasized to distant body sites are most dangerous, with five-year survival rates of 30–40%. (Full article...)
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  Genetics is the study of genes, genetic variation, and heredity in organisms. It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinian friar working in the 19th century in Brno, was the first to study genetics scientifically. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring over time. He observed that organisms (pea plants) inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene.
  
  Trait inheritance and molecular inheritance mechanisms of genes are still primary principles of genetics in the 21st century, but modern genetics has expanded to study the function and behavior of genes. Gene structure and function, variation, and distribution are studied within the context of the cell, the organism (e.g. dominance), and within the context of a population. Genetics has given rise to a number of subfields, including molecular genetics, epigenetics, and population genetics. Organisms studied within the broad field span the domains of life (archaea, bacteria, and eukarya). (Full article...)
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  Liver histology is altered in HRS while kidney histology is normal. The upper image is a trichrome stain (chicken wire appearance) cirrhosis of the liver, the most common cause of HRS. The lower image is a PAS stain of normal kidney histology.

  
  Hepatorenal syndrome (HRS) is a life-threatening medical condition that consists of rapid deterioration in kidney function in individuals with cirrhosis or fulminant liver failure. HRS is usually fatal unless a liver transplant is performed, although various treatments, such as dialysis, can prevent advancement of the condition.
  
  HRS can affect individuals with cirrhosis, severe alcoholic hepatitis, or liver failure, and usually occurs when liver function deteriorates rapidly because of a sudden insult such as an infection, bleeding in the gastrointestinal tract, or overuse of diuretic medications. HRS is a relatively common complication of cirrhosis, occurring in 18% of people within one year of their diagnosis, and in 39% within five years of their diagnosis. Deteriorating liver function is believed to cause changes in the circulation that supplies the intestines, altering blood flow and blood vessel tone in the kidneys. The kidney failure of HRS is a consequence of these changes in blood flow, rather than direct damage to the kidney. The diagnosis of hepatorenal syndrome is based on laboratory tests of individuals susceptible to the condition. Two forms of hepatorenal syndrome have been defined: Type 1 HRS entails a rapidly progressive decline in kidney function, while type 2 HRS is associated with ascites (fluid accumulation in the abdomen) that does not improve with standard diuretic medications. (Full article...)
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  Sorrowing Old Man (At Eternity's Gate), an 1890 portrait by Vincent van Gogh

  
  Major depressive disorder (MDD), also known as clinical depression, is a mental disorder characterized by at least two weeks of pervasive low mood, low self-esteem, and loss of interest or pleasure in normally enjoyable activities. Introduced by a group of US clinicians in the mid-1970s, the term was adopted by the American Psychiatric Association for this symptom cluster under mood disorders in the 1980 version of the Diagnostic and Statistical Manual of Mental Disorders (DSM-III), and has become widely used since. The disorder causes the second-most years lived with disability, after lower back pain.
  
  The diagnosis of major depressive disorder is based on the person's reported experiences, behavior reported by relatives or friends, and a mental status examination. There is no laboratory test for the disorder, but testing may be done to rule out physical conditions that can cause similar symptoms. The most common time of onset is in a person's 20s, with females affected about twice as often as males. The course of the disorder varies widely, from one episode lasting months to a lifelong disorder with recurrent major depressive episodes. (Full article...)
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  Xenon is a chemical element; it has symbol Xe and atomic number 54. It is a dense, colorless, odorless noble gas found in Earth's atmosphere in trace amounts. Although generally unreactive, it can undergo a few chemical reactions such as the formation of xenon hexafluoroplatinate, the first noble gas compound to be synthesized.
  
  Xenon is used in flash lamps and arc lamps, and as a general anesthetic. The first excimer laser design used a xenon dimer molecule (Xe₂) as the lasing medium, and the earliest laser designs used xenon flash lamps as pumps. Xenon is also used to search for hypothetical weakly interacting massive particles and as a propellant for ion thrusters in spacecraft. (Full article...)
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  The four primary symptoms of ME/CFS according to the National Institute for Health and Care Excellence

  
  Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disabling chronic illness. People with ME/CFS experience profound fatigue that does not go away with rest, as well as sleep issues and problems with memory or concentration. The hallmark symptom is post-exertional malaise, a worsening of the illness which starts hours to days after minor physical or mental activity. This "crash" can last from hours or days to several months. Further common symptoms include dizziness or faintness when upright and pain.
  
  
  The cause of the disease is unknown. ME/CFS often starts after an infection, such as mononucleosis. It can run in families, but no genes that contribute to ME/CFS have been confirmed. ME/CFS is associated with changes in the nervous and immune systems, as well as in energy production. Diagnosis is based on symptoms and a differential diagnosis because no diagnostic test is available. (Full article...)
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  Hirudo medicinalis sucking blood

  
  Leeches are segmented parasitic or predatory worms that comprise the subclass Hirudinea within the phylum Annelida. They are closely related to the oligochaetes, which include the earthworm, and like them have soft, muscular segmented bodies that can lengthen and contract. Both groups are hermaphrodites and have a clitellum, but leeches typically differ from the oligochaetes in having suckers at both ends and ring markings that do not correspond with their internal segmentation. The body is muscular and relatively solid; the coelom, the spacious body cavity found in other annelids, is reduced to small channels.
  
  The majority of leeches live in freshwater habitats, while some species can be found in terrestrial or marine environments. The best-known species, such as the medicinal leech, Hirudo medicinalis, are hematophagous, attaching themselves to a host with a sucker and feeding on blood, having first secreted the peptide hirudin to prevent the blood from clotting. The jaws used to pierce the skin are replaced in other species by a proboscis which is pushed into the skin. A minority of leech species are predatory, mostly preying on small invertebrates. (Full article...)
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  In the early 20th century, German researchers found additional evidence linking smoking to health harms, which strengthened the anti-tobacco movement in the Weimar Republic and led to a state-supported anti-smoking campaign. Early anti-tobacco movements grew in many nations from the middle of the 19th century. The 1933–1945 anti-tobacco campaigns in Nazi Germany have been widely publicized, although stronger laws than those passed in Germany were passed in some American states, the UK, and elsewhere between 1890 and 1930. After 1941, anti-tobacco campaigns were restricted by the Nazi government.
  
  The German movement was the most powerful anti-smoking movement in the world during the 1930s and early 1940s. However, tobacco control policy was incoherent and ineffective, with uncoordinated and often regional efforts by many actors. Obvious measures were not taken, and existing measures were not enforced. Some Nazi leaders condemned smoking and several of them openly criticized tobacco consumption, but others publicly smoked and denied that it was harmful. (Full article...)
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  Cloth embroidered by a person diagnosed with schizophrenia

  
  Schizophrenia is a mental disorder characterized variously by hallucinations (typically, hearing voices), delusions, disorganized thinking and behavior, and flat or inappropriate affect. Symptoms develop gradually and typically begin during young adulthood and are never resolved. There is no objective diagnostic test; diagnosis is based on observed behavior, a psychiatric history that includes the person's reported experiences, and reports of others familiar with the person. For a diagnosis of schizophrenia, the described symptoms need to have been present for at least six months (according to the DSM-5) or one month (according to the ICD-11). Many people with schizophrenia have other mental disorders, especially mood disorders, anxiety disorders, and obsessive–compulsive disorder.
  
  
  About 0.3% to 0.7% of people are diagnosed with schizophrenia during their lifetime. In 2017, there were an estimated 1.1 million new cases and in 2022 a total of 24 million cases globally. Males are more often affected and on average have an earlier onset than females. The causes of schizophrenia may include genetic and environmental factors. Genetic factors include a variety of common and rare genetic variants. Possible environmental factors include being raised in a city, childhood adversity, cannabis use during adolescence, infections, the age of a person's mother or father, and poor nutrition during pregnancy. (Full article...)
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  A D. medinensis worm emerges from a wound on a person's foot

  
  Dracunculiasis, also called Guinea-worm disease, is a parasitic infection by the Guinea worm, Dracunculus medinensis. A person becomes infected by drinking water contaminated with Guinea-worm larvae that reside inside copepods (a type of small crustacean). Stomach acid digests the copepod and releases the Guinea worm, which penetrates the digestive tract and escapes into the body. Around a year later, the adult female migrates to an exit site – usually the lower leg – and induces an intensely painful blister on the skin. Eventually, the blister bursts, creating a painful wound from which the worm gradually emerges over several weeks. The wound remains painful throughout the worm's emergence, disabling the affected person for the three to ten weeks it takes the worm to emerge.
  
  There is no medication to treat or prevent dracunculiasis. Instead, the mainstay of treatment is the careful wrapping of the emerging worm around a small stick or gauze to encourage and speed up its exit. Each day, a few more centimeters of the worm emerge, and the stick is turned to maintain gentle tension. Too much tension can break and kill the worm in the wound, causing severe pain and swelling. Dracunculiasis is a disease of extreme poverty, occurring in places with poor access to clean drinking water. Prevention efforts center on filtering drinking water to remove copepods, as well as public education campaigns to discourage people from soaking affected limbs in sources of drinking water, as this allows the worms to spread their larvae. (Full article...)

Selected image –

Scanning electron micrograph of HIV-1 budding from cultured lymphocyte. Multiple round bumps on cell surface represent sites of assembly and budding of virions.

Photo credit: Centers for Disease Control / C. Goldsmith

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  A scanning electron microscope image of human immunodeficiency virus (green) in and around a cultured lymphocyte

  
  
  Bugchasing (alternatively bug chasing) is the rare practice of intentionally seeking human immunodeficiency virus (HIV) infection through sexual activity.
  
  Bugchasers—those who eroticize HIV—are a subculture of barebackers, men who have unprotected sex with other men. It is statistically rare for men to self-identify as bugchasers, and many of those who do never participate in sexual acts that can lead to HIV infection. There are some explanations for the behavior and fantasies of bugchasing, ranging from sexual excitement at the idea of HIV-positive status, to finding a shared sense of community with other HIV-positive people, to suicidality. (Full article...)
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  Allen being given the Medal of Freedom

  
  Beulah Ream Allen (January 26, 1897 – March 17, 1989) was an American nurse, physician, and civilian physician during World War II. After graduating with a nursing degree in 1922, she worked as a supervising nurse and headed the educational department for the LDS Hospital in Salt Lake City. She worked as a hospital inspector for the state of Utah until 1928, when she moved to San Francisco to attend medical school. While earning her degree at the University of California, San Francisco, she worked as a nurse in the Bay Area. Upon her graduation in 1932, she moved to the Philippines, where she opened a medical practice.
  
  During World War II, she volunteered as a civilian surgeon for the United States Army. She was stationed in Baguio and was responsible for the care of nearly 30 soldiers, when the rest of the Army retreated to the Bataan Peninsula. Taken prisoner in 1941, she was held in three internment camps before being liberated. Returning to the United States, she resumed her practice in the Bay Area. She was awarded the Medal of Freedom in 1946. In 1960, she moved her practice to Provo, Utah, where she served as dean of the Brigham Young University College of Nursing until 1964. Allen retired in 1979 and in that year married and relocated to Mesa, Arizona, where she lived until her death in 1989. (Full article...)
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  The pituitary gland on a plate from Gray's Anatomy (1918). The anterior lobe is on the left, and the posterior lobe on the right, both in red.

  
  Hypopituitarism is the decreased (hypo) secretion of one or more of the eight hormones normally produced by the pituitary gland at the base of the brain. If there is decreased secretion of one specific pituitary hormone, the condition is known as selective hypopituitarism. If there is decreased secretion of most or all pituitary hormones, the term panhypopituitarism (pan meaning "all") is used.
  
  The signs and symptoms of hypopituitarism vary, depending on which hormones are undersecreted and on the underlying cause of the abnormality. The diagnosis of hypopituitarism is made by blood tests, but often specific scans and other investigations are needed to find the underlying cause, such as tumors of the pituitary, and the ideal treatment. Most hormones controlled by the secretions of the pituitary can be replaced by tablets or injections. Hypopituitarism is a rare disease, but may be significantly underdiagnosed in people with previous traumatic brain injury. The first description of the condition was made in 1914 by the German physician Dr Morris Simmonds. (Full article...)
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  Chest X-ray showing left sided hemothorax (arrowed)

  
  A hemothorax (derived from hemo- [blood] + thorax [chest], plural hemothoraces) is an accumulation of blood within the pleural cavity. The symptoms of a hemothorax may include chest pain and difficulty breathing, while the clinical signs may include reduced breath sounds on the affected side and a rapid heart rate. Hemothoraces are usually caused by an injury, but they may occur spontaneously due to cancer invading the pleural cavity, as a result of a blood clotting disorder, as an unusual manifestation of endometriosis, in response to pneumothorax, or rarely in association with other conditions.
  
  Hemothoraces are usually diagnosed using a chest X-ray, but they can be identified using other forms of imaging including ultrasound, a CT scan, or an MRI. They can be differentiated from other forms of fluid within the pleural cavity by analysing a sample of the fluid, and are defined as having a hematocrit of greater than 50% that of the person's blood. Hemothoraces may be treated by draining the blood using a chest tube. Surgery may be required if the bleeding continues. If treated, the prognosis is usually good. Complications of a hemothorax include infection within the pleural cavity and the formation of scar tissue. (Full article...)
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  Cover of an early printed version, Lyon, 1554

  
  De materia medica (Latin name for the Greek work Περὶ ὕλης ἰατρικῆς, Peri hulēs iatrikēs, both meaning "On Medical Material") is a pharmacopoeia of medicinal plants and the medicines that can be obtained from them. The five-volume work was written between 50 and 70 CE by Pedanius Dioscorides, a Greek physician in the Roman army. It was widely read for more than 1,500 years until supplanted by revised herbals in the Renaissance, making it one of the longest-lasting of all natural history and pharmacology books.
  
  The work describes many drugs known to be effective, including aconite, aloes, colocynth, colchicum, henbane, opium and squill. In total, about 600 plants are covered, along with some animals and mineral substances, and around 1000 medicines made from them. (Full article...)
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  Doctor Thomas Hinde (July 10, 1737 – September 28, 1828) was Northern Kentucky's first physician, a member of the British Royal Navy, an American Revolutionary, personal physician to Patrick Henry, and treated General Wolfe when he died in Quebec, Canada. (Full article...)
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  Ixodes ricinus, a hard tick

  
  Ticks are parasitic arachnids of the order Ixodida. They are part of the mite superorder Parasitiformes. Adult ticks are approximately 3 to 5 mm in length depending on age, sex, species, and "fullness". Ticks are external parasites, living by feeding on the blood of mammals, birds, and sometimes reptiles and amphibians. The timing of the origin of ticks is uncertain, though the oldest known tick fossils are from the Cretaceous period, around 100 million years old. Ticks are widely distributed around the world, especially in warm, humid climates.
  
  Ticks belong to two major families, the Ixodidae or hard ticks, and the Argasidae, or soft ticks. Nuttalliella, a genus of tick from southern Africa, is the only member of the family Nuttalliellidae, and represents the most primitive living lineage of ticks. Adults have ovoid/pear-shaped bodies (idiosomas) which become engorged with blood when they feed, and eight legs. Their cephalothorax and abdomen are completely fused. In addition to having a hard shield on their dorsal surfaces, known as the scutum, hard ticks have a beak-like structure at the front containing the mouthparts, whereas soft ticks have their mouthparts on the underside of their bodies. Ticks locate potential hosts by sensing odor, body heat, moisture, and/or vibrations in the environment. (Full article...)
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  3D CT of an impacted wisdom tooth adjacent the inferior alveolar nerve prior to removal of wisdom tooth

  
  Impacted wisdom teeth is a condition where the third molars (wisdom teeth) are prevented from erupting into the mouth. This can be caused by a physical barrier, such as other teeth, or when the tooth is angled away from a vertical position. Completely unerupted wisdom teeth usually result in no symptoms, although they can sometimes develop cysts or neoplasms. Partially erupted wisdom teeth or wisdom teeth that are not erupted but are exposed to oral bacteria through deep periodontal pocket, can develop cavities or pericoronitis. Removal of impacted wisdom teeth is advised for the future prevention of or in the current presence of certain pathologies, such as caries (dental decay), periodontal disease or cysts. Prophylactic (preventative) extraction of wisdom teeth is preferred to be done at a younger age (middle to late teenage years) to take advantage of incomplete root development, which is associated with an easier surgical procedure and less probability of complications.
  
  
  Impacted wisdom teeth are classified by their direction of impaction, their depth compared to the biting surface of adjacent teeth and the amount of the tooth's crown that extends through gum tissue or bone. Impacted wisdom teeth can also be classified by the presence or absence of symptoms and disease. Screening for the presence of wisdom teeth often begins in late adolescence when a partially developed tooth may become impacted. Screening commonly includes a clinical examination as well as x-rays such as panoramic radiographs. (Full article...)
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  Vera Gedroits with patients circa 1915

  
  Princess Vera Ignatievna Gedroits (Russian: Ве́ра Игна́тьевна Гедро́йц, IPA: [ˈvʲɛrə ɪɡˈnatʲjɪvnə ɡʲɪˈdrojts] listen; 7 April 1870 O.S./19 April 1870 N.S. – March 1932, literary pen name Sergei Gedroits) was a Russian doctor of medicine and author. She was the first woman military surgeon in Russia, the first woman professor of surgery, and the first woman to serve as a physician to the Imperial Court of Russia.
  
  Following her involvement in a student movement, Gedroits was unable to complete her studies in Russia, and despite being openly lesbian, entered into a marriage of convenience, which allowed her to obtain a passport in another name and leave the country. In Switzerland, she enrolled in the medical courses of César Roux and graduated in 1898, working as Roux’s assistant, but returned to Russia because of illnesses in her family. (Full article...)
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  In Liberia, abortion is only legal in cases of rape, fetal impairment, or risk to the mother's physical or mental health or life, up to the 24th week of pregnancy. About 32% of women have had abortions, which Liberians call "spoiling the belly". Unsafe abortions are common and account for 15% of maternal deaths in the country. Self-induced abortions are common. Medical abortion is legally restricted. Post-abortion care is available from public and private facilities.
  
  Liberia's abortion law is from 1976. The Legislature of Liberia introduced a bill to legalize abortion in 2020. The legislature began debating the revision in 2022 after it was introduced by Senator Augustine Chea. Pro-abortion advocacy groups have said it will reduce the high rate of unsafe abortions. Religious leaders have opposed it, saying it violates fetal rights. As of 2024, the bill is being debated. (Full article...)
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  Herpes zoster blisters on the neck and shoulder

  
  Shingles, also known as herpes zoster or zona, is a viral disease characterized by a painful skin rash with blisters in a localized area. Typically the rash occurs in a single, wide mark either on the left or right side of the body or face. Two to four days before the rash occurs there may be tingling or local pain in the area. Other common symptoms are fever, headache, and tiredness. The rash usually heals within two to four weeks, but some people develop ongoing nerve pain which can last for months or years, a condition called postherpetic neuralgia (PHN). In those with poor immune function the rash may occur widely. If the rash involves the eye, vision loss may occur.
  
  Shingles is caused by the varicella zoster virus (VZV) that also causes chickenpox. In the case of chickenpox, also called varicella, the initial infection with the virus typically occurs during childhood or adolescence. Once the chickenpox has resolved, the virus can remain dormant (inactive) in human nerve cells (dorsal root ganglia or cranial nerves) for years or decades, after which it may reactivate and travel along nerve bodies to nerve endings in the skin, producing blisters. During an outbreak of shingles, exposure to the varicella virus found in shingles blisters can cause chickenpox in someone who has not yet had chickenpox, although that person will not suffer from shingles, at least on the first infection. How the virus remains dormant in nerve cells or subsequently re-activates is not well understood. (Full article...)
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  Rabeprazole, sold under the brand name Aciphex, among others, is a medication that decreases stomach acid. It is used to treat peptic ulcer disease, gastroesophageal reflux disease, and excess stomach acid production such as in Zollinger–Ellison syndrome. It may also be used in combination with other medications to treat Helicobacter pylori. Effectiveness is similar to other proton pump inhibitors (PPIs). It is taken by mouth.
  
  
  Common side effects include constipation, feeling weak, and throat inflammation. Serious side effects may include osteoporosis, low blood magnesium, Clostridioides difficile infection, and pneumonia. Use in pregnancy and breastfeeding is of unclear safety. It works by blocking H⁺/K⁺-ATPase in the parietal cells of the stomach. (Full article...)
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  Elmer Ernest (E. E.) Southard (July 28, 1876 – February 8, 1920) was an American neuropsychiatrist, neuropathologist, professor and author. Born in Boston, Massachusetts, Southard lived in the city for nearly his entire life. He attended Boston Latin School and completed his education at Harvard University. At Harvard, Southard distinguished himself as a chess player. After briefly studying in Germany, he returned to the United States as a pathologist at Danvers State Hospital. Southard held academic appointments at Harvard University and its medical school.
  
  He headed the Boston Psychopathic Hospital when it opened in 1912, pioneering the study of brain pathology with particular interests in shell shock and schizophrenia. Southard published several books, including Shell Shock and Other Neuropsychiatric Problems with nearly 1,000 case histories. He was president of the American Medico-Psychological Association and the Boston Society of Psychiatry and Neurology, and held advisory positions with the U.S. Chemical Warfare Service and the Eugenics Record Office. (Full article...)
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  Biotin (also known as vitamin B₇ or vitamin H) is one of the B vitamins. It is involved in a wide range of metabolic processes, both in humans and in other organisms, primarily related to the utilization of fats, carbohydrates, and amino acids. The name biotin, borrowed from the German Biotin, derives from the Ancient Greek word βίοτος (bíotos; 'life') and the suffix "-in" (a suffix used in chemistry usually to indicate 'forming'). Biotin appears as a white, needle-like crystalline solid. (Full article...)
• 
  
  

  

  The mouth of a person with symptoms similar to those caused by long-term use of methamphetamine

  
  Meth mouth is a colloquial term used to describe severe tooth decay and tooth loss, as well as tooth fracture, acid erosion, and other oral problems that are often symptomatic to extended use of the drug methamphetamine. The condition is thought to be caused by a combination of side effects of the drug (clenching and grinding of teeth, dry mouth) and lifestyle factors (infrequent oral hygiene, frequent consumption of sugary drinks, as well as neglecting regular dental cleanings and preventive care), which may be present in long-term users. However, the legitimacy of meth mouth as a unique condition has been questioned because of the similar effects of some other drugs on teeth. Images of diseased mouths are often used in anti-drug campaigns.
  
  The condition is difficult to treat, and may involve fillings, fluoride to fight tooth decay and drugs that increase saliva for dry mouth, as well as oral hygiene instruction. It can be dangerous for active methamphetamine users to undergo
  dental surgery because of the cardiac problems that can result from the interaction of local anesthetic with the drug. (Full article...)

Did you know –

• ... that the most common cause of acute coronary syndrome is disruption of atherosclerotic plaque in a coronary artery?

• ... that the polymeal is a diet-based approach to combating heart disease, proposed in December 2004 by Oscar Franco?
• ... that a mammotome is a device that uses a computer-guided probe to perform breast biopsies, and that it can be conducted on an outpatient basis under local anaesthetic?

General images –

The following are images from various Medicine-related articles on Wikipedia.

• 
  Traditional medicine in a market in Antananarivo, Madagascar (from Traditional medicine)
• 
  Seven named physicians and botanists of the Classical world from Vienna Dioscurides. Clockwise from top center: Galen, Dioscorides, Nicander, Rufus of Ephesus, Andreas of Carystus, Apollonius Mus or of Pergamon, Crateuas (from History of medicine)
• 
  healthcare expenditure in Japan by age group (from Health insurance)
• 
  Taoist symbol of Yin and Yang (from Medical ethics)
• 
  Health spending by country. Percent of GDP (Gross domestic product). For example: 11.2% for Canada in 2022. 16.6% for the United States in 2022. (from Health care)
• 
  American Civil War hospital at Gettysburg, 1863 (from History of medicine)
• 
  AMA Code of Medical Ethics (from Medical ethics)
• 
  Yarrow, a medicinal plant found in human-occupied caves in the Upper Palaeolithic period (from History of medicine)
• 
  A doctor checks a patient's pulse in Meiji-era Japan. (from History of medicine)
• 
  A cuneiform terracotta tablet describing a medicinal recipe for poisoning (c. 18th century BCE). Discovered in Nippur, Iraq.
• 
  Primary care may be provided in community health centers. (from Health care)
• 
  Statue of Robert Koch, father of medical bacteriology, at Robert-Koch-Platz (Robert Koch square) in Berlin (from History of medicine)
• 
  Louis Pasteur experimenting on bacteria, c. 1870 (from History of medicine)
• 
  Life Expectancy of the total population at birth among several OECD member nations. Data source: OECD's iLibrary (from Health insurance)
• 
  Curandera performing a limpieza in Cuenca, Ecuador (from Traditional medicine)
• 
  An American billing clerk preparing a detailed invoice. (1992) (from Medical billing)
• 
  Zhang Zhongjing – a Chinese pharmacologist, physician, inventor, and writer of the Eastern Han dynasty (from History of medicine)
• 
  Ethical prayer for medical wisdom by Dr Edmond Fernandes (from Medical ethics)
• 
  The emergency room is often a frontline venue for the delivery of primary medical care. (from Health care)
• 
  Charite in Berlin (from History of medicine)
• 
  Medical personnel place sterilized covers on the arms of the daVinci Xi surgical system, a minimally-invasive robotic surgery system, at the William Beaumont Army Medical Center. (from History of medicine)
• 
  Total healthcare cost per person. Public and private spending. US dollars PPP. For example: $6,319 for Canada in 2022. $12,555 for the US in 2022. (from Health care)
• 
  A cochlear implant is a common kind of neural prosthesis, a device replacing part of the human nervous system. (from History of medicine)
• 
  A 12th-century manuscript of the Hippocratic Oath in Greek, one of the most famous aspects of classical medicine that carried into later eras (from History of medicine)
• 
  Hospital train "Therapist Matvei Mudrov" in Khabarovsk, Russia (from Health care)
• 
  Sometimes traditional medicines include parts of endangered species, such as the slow loris in Southeast Asia. (from Traditional medicine)
• 
  Life expectancy vs healthcare spending of rich OECD countries. US average of $10,447 in 2018. (from Health care)
• 
  A Neo-Assyrian cuneiform tablet fragment describing medical text (c. 9th to 7th century BCE) (from History of medicine)
• 
  Patient, Surrey County Lunatic Asylum, c. 1850–58. The asylum population in England and Wales rose from 1,027 in 1827 to 74,004 in 1900. (from History of medicine)
• 
  Jackson Memorial Hospital in Miami, the primary teaching hospital of the University of Miami's Miller School of Medicine and the largest hospital in the United States with 1,547 beds (from Health care)
• 
  Depiction of smallpox in Franciscan Bernardino de Sahagún's history of the conquest of Mexico, Book XII of the Florentine Codex, from the defeated Aztecs' point of view (from History of medicine)
• 
  "More Doctors Smoke Camels than Any Other Cigarette" advertisement for Camel cigarettes in the 1940s (from Medical ethics)
• 
  Mandrake (written 'ΜΑΝΔΡΑΓΟΡΑ' in Greek capitals). Naples Dioscurides, 7th century (from History of medicine)
• 
  Health expenditure funding types (from Health insurance)
• 
  Guy's Hospital in 1820 (from History of medicine)
• 
  Infographic showing how healthcare data flows within the billing process (from Medical billing)
• 
  American combat surgery during the Pacific War, 1943 (from History of medicine)
• 
  Sketch of Muslim physician Muhammad ibn Zakariya al-Razi (from History of medicine)
• 
  The plinthios brochos as described by Greek physician Heraklas, a sling for binding a fractured jaw. These writings were preserved in one of Oribasius' collections. (from History of medicine)
• 
  National Hospital for Neurology and Neurosurgery in London, United Kingdom is a specialist neurological hospital. (from Health care)
• 
  Emil Kraepelin (1856–1926), the founder of modern scientific psychiatry, psychopharmacology and psychiatric genetics (from History of medicine)
• 
  Global concentrations of health care resources, as depicted by the number of physicians per 10,000 individuals, by country. Data is sourced from a World Health Statistics 2010, a WHO report. (from Health care)
• 
  18th-century medical remedies collected by a British Gentry family (from History of medicine)
• 
  COVID-19 swab testing in Rwanda (2021) (from History of medicine)
• 
  Hippocrates (c. 460–370 BCE). Known as the "father of medicine". (from History of medicine)
• 
  Galen (129–216 CE), known for his wide insights into anatomy (from History of medicine)
• 
  "Diagram of the causes of mortality in the army in the East" by Florence Nightingale (from History of medicine)
• 
  Botánicas such as this one in Jamaica Plain, Boston, cater to the Latino community and sell folk medicine alongside statues of saints, candles decorated with prayers, lucky bamboo, and other items. (from Traditional medicine)
• 
  Mexico City epidemic of 1737, with elites calling on the Virgin of Guadalupe (from History of medicine)
• 
  The Edwin Smith Surgical Papyrus, written in the 17th century BCE, contains the earliest recorded reference to the brain. New York Academy of Medicine. (from History of medicine)
• 
  Replica of Antonie van Leeuwenhoek's microscope of the 1670s (from History of medicine)
• 
  The Quaker-run York Retreat, founded in 1796, gained international prominence as a centre for moral treatment and a model of asylum reform following the publication of Samuel Tuke's Description of the Retreat (1813). (from History of medicine)
• 
  Health Expenditure per capita (in PPP-adjusted US$) among several OECD member nations. Data source: OECD's iLibrary (from Health insurance)
• 
  A Ukrainian monument to the HIV pandemic (from History of medicine)
• 
  Magical stela or cippus of Horus inscribed with healing encantations (c. 332 to 280 BCE) (from History of medicine)
• 
  Medicine during the First World War - medical transport (from History of medicine)
• 
  Most countries have seen a tremendous increase in life expectancy since 1945. However, in southern Africa, the HIV epidemic beginning around 1990 has eroded national health. (from History of medicine)
• 
  The numbers of Americans lacking health insurance and the uninsured rate from 1987 to 2008 (from Health insurance)
• 
  Smallpox vaccination in Niger, 1969. A decade later, this was the first infectious disease to be eradicated. (from History of medicine)
• 
  A 12th-century Byzantine manuscript of the Hippocratic Oath (from Medical ethics)

More Did you know (auto generated)

• ... that the Noongar used the Eucalyptus wandoo tree as a medicine and ointment?
• ... that fourteenth-century Buddhist monk Tuệ Tĩnh is referred to as a founding father of traditional Vietnamese medicine?
• ... that Constance Fozzard was told during her surgical training that women with children could not become consultants?
• ... that Tang Zonghai was one of the first advocates for the integration of Chinese and Western medicine?
• ... that Margaret C. Roberts was encouraged to study medicine by LDS Church leader Brigham Young to reduce mortality rates during childbirth?
• ... that a lack of screening for pregnant women with syphilis in sub-Saharan Africa is associated with increased infant mortality?

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