25,729 articles
Kienbock disease
Kienbock disease (lunatomalacia), osteonecrosis of the carpal lunate of unknown cause, typically in men aged 20-40, progressing through four Lichtman stages to lunate collapse and wrist arthritis; no treatment proven superior.
Kikuchi disease (菊池病)
Kikuchi disease, also called Kikuchi-Fujimoto disease, is a rare, self-limited lymph node inflammation causing tender neck swelling and fever, first described in Japan in 1972.
Killer cell immunoglobulin-like receptor typing
Killer cell immunoglobulin-like receptor typing, or KIR typing, is a genotyping method that determines which KIR genes a person carries, in what copy number, and at which alleles.
Killip class
Killip class: four-level 1967 Killip-Kimball classification of heart failure severity in acute myocardial infarction, from class I (no heart failure) to class IV (cardiogenic shock), used in GRACE and TIMI risk scores.
Kilohertz-frequency spinal cord stimulation
Kilohertz-frequency spinal cord stimulation (kHz SCS) is a paresthesia-free neuromodulation therapy using 10 kHz pulses; in the SENZA-RCT it outperformed traditional SCS for back and leg pain.
Kim Peek
Kim Peek (Laurence Kim Peek, 1951–2009), American savant and Rain Man inspiration; memorized over 6,000 books, read two pages at once, had no corpus callosum, and is now thought to have had FG syndrome rather than autism.
Kimberly Dawn Anderson-Erisman
Kimberly Dawn Anderson-Erisman is an American spinal cord injury rehabilitation researcher at MetroHealth and Case Western Reserve, elected to the National Academy of Medicine in 2023.
Kimura disease
Kimura disease, a rare chronic inflammatory disorder endemic to East Asia, causes painless head and neck masses, lymphadenopathy, eosinophilia, and elevated IgE; treated with surgery, radiotherapy, or anti-IL-5 biologics.
Kinanthropometry
Kinanthropometry is the study of human body size, shape, proportion, composition, and function in relation to movement, exercise, fitness, and sporting performance, first defined by William Ross in 1978.
Kindler epidermolysis bullosa
Kindler epidermolysis bullosa (Kindler syndrome, OMIM 173650) is a rare autosomal recessive EB subtype from FERMT1 loss-of-function mutations, causing neonatal blistering, photosensitivity, poikiloderma, mucosal strictures, and squamous cell carcinoma risk.
Kindling (neuroscience)
Kindling is an animal model of temporal lobe epilepsy in which repeated daily electrical stimulation of the amygdala or hippocampus progressively intensifies seizures until generalized convulsions occur, producing lasting seizure susceptibility.
Kinetocardiography
Kinetocardiography (KCG), also indexed as vibrocardiography and apex cardiography, is the graphic recording of low-frequency (0-30 Hz) chest wall movements caused by cardiac impulses, introduced by Eddleman in 1953.
King Abdulaziz Medical City
King Abdulaziz Medical City (KAMC-RD, مدينة الملك عبدالعزيز الطبية) is the National Guard Health Affairs tertiary hospital complex in Riyadh, Saudi Arabia, opened 1982-1983, with 1,973 beds serving National Guard personnel and families.
King Abdullah University Hospital
King Abdullah University Hospital (KAUH), Irbid, Jordan: JUST-affiliated teaching and referral hospital with 683 beds (up to 800), serving over 1 million people in northern Jordan; HCAC accredited 2019, Gold 2022. Distinct from King Abdullah the Founder Hospital, Ramtha, and Saudi KAAUH.
King Chulalongkorn Memorial Hospital
King Chulalongkorn Memorial Hospital (โรงพยาบาลจุฬาลงกรณ์), opened 30 May 1914, is the Thai Red Cross Society's main public teaching hospital in Bangkok, run with Chulalongkorn University's Faculty of Medicine; 1,200–1,400 beds, tertiary referral care, and research.
King Khalid University Hospital
King Khalid University Hospital (KKUH) is the 800-bed teaching hospital of King Saud University's College of Medicine in Riyadh, inaugurated by King Khalid in 1982, expanded to 1,200 beds in 2016, and CBAHI-accredited.
King-Denborough syndrome
King-Denborough syndrome (Koussef-Nichols syndrome), OMIM 619542, is a rare autosomal congenital myopathy with dysmorphic features and malignant hyperthermia susceptibility, linked to RYR1 and, in recessive African cases, STAC3.
King's College Hospital
King's College Hospital, Denmark Hill, Camberwell, London: NHS teaching hospital founded 1840 by Robert Bentley Todd, moved to Camberwell 1913, Foundation Trust since 2006, major trauma centre and leading liver transplant unit.
Kinsey Reports
The Kinsey Reports are Sexual Behavior in the Human Male (1948) and Sexual Behavior in the Human Female (1953), Alfred Kinsey's 18,000-interview sex surveys, bestsellers whose nonprobability sampling drew major statistical criticism.
Kismandaka Rasayana
Kushmandaka Rasayana (Kusmandaka Rasayana), a classical Ayurvedic ash gourd (Benincasa hispida) confection listed in the AFI and API, indicated for cough, dyspnoea, bleeding disorders, and debility; studied in a 193-patient chronic bronchitis trial.
Kissing spine
Kissing spine, or Baastrup disease (interspinous ligament syndrome), is contact between adjacent vertebral spinous processes causing extension-related back pain; ICD-11 FA72.1, common in elderly lumbar spines and in horses.
Kiyoshi Kurokawa (黒川清)
Kiyoshi Kurokawa (黒川清) is a Japanese nephrologist and health-policy scholar, professor emeritus at the University of Tokyo and GRIPS, who chaired the National Diet's Fukushima nuclear accident investigation commission.
KJ Muldoon
KJ Muldoon, also known as Kyle Muldoon Jr., is an American infant who in 2025 received the first personalized CRISPR gene-editing therapy, treating his CPS1 deficiency.
Kjellin syndrome
Kjellin syndrome, also called SPG15 or spastic paraplegia-retinal degeneration syndrome, is a rare autosomal recessive HSP with retinal degeneration, thin corpus callosum, intellectual disability, and amyotrophy; more often caused by SPG11 than ZFYVE26 mutations.
Kleefstra syndrome
Kleefstra syndrome (KLEFS1, 9q34.3 microdeletion syndrome) is a rare autosomal-dominant neurodevelopmental disorder caused by EHMT1 haploinsufficiency, with intellectual disability, severe speech delay, hypotonia, heart and renal defects, and a distinctive face.
Kleihauer–Betke test
Kleihauer–Betke test (Kleihauer test, acid elution test): 1957 maternal blood assay detecting acid-resistant fetal HbF cells to quantify fetomaternal hemorrhage and guide Rho(D) immune globulin dosing in Rh D-negative women.
Kleine–Levin syndrome
Kleine–Levin syndrome, also called Sleeping beauty syndrome, is a rare neuropsychiatric sleep disorder with recurring bouts of severe sleepiness, cognitive impairment, and altered behavior, usually beginning in adolescence.
Kleptomania
Kleptomania, an impulse control disorder in DSM-5 and ICD-11, is the recurrent failure to resist stealing unneeded items, with tension before and relief after; prevalence 0.3–2.6%.
KLF1
KLF1 (EKLF, erythroid Krüppel-like factor) is a zinc finger transcription factor on chromosome 19, essential for terminal red cell differentiation, β-globin activation, and hemoglobin switching; variants cause In(Lu), HPFH, hemolytic anemia, and CDA type IV.
KLHL7-related Bohring-Opitz-like and Crisponi/Cold-induced sweating-like overlap syndrome
KLHL7-related Bohring-Opitz-like and Crisponi/Cold-induced sweating-like overlap syndrome, also called PERCHING syndrome, is a rare genetic disorder with neonatal onset caused by autosomal recessive variants in the KLHL7 gene.