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- HaematommaHaematomma is a genus of crustose lichens established by Abramo Bartolommeo Massalongo in
- Haemodialysis-associated amyloidosisHaemodialysis-associated amyloidosis is a form of systemic amyloidosis associated with chr
- HaemolacriaHaemolacria or hemolacria is a physical condition that causes a person to produce tears th
- HaemophiliaGenetic disease involving blood clotting
- Hailey–Hailey diseaseHailey–Hailey disease (HHD), or familial benign chronic pemphigus or familial benign pemph
- Hair analysis (alternative medicine)Analysis of hair to assist alternative diagnosis
- Hair careHygiene and cosmetology involving human hair
- Hair conditionerHair care product
- Hair diseaseHair diseases are illnesses that impact the persistence and regular growth of hair. Types
- Hair lossLoss of hair from the head or body
- Hair removalBody hair removal
- Hair tourniquetHair tourniquet is a condition where hair or thread becomes tightly wrapped around most co
- HairbrushBrush for hair care
- HallucinogenClass of drugs
- HalothaneGeneral anaesthetic
- HamartomaA hamartoma is a mostly benign, local malformation of cells that resembles a neoplasm of l
- HamstringHuman leg muscle
- Hand sanitizerSupplement to hand washing
- Hand washingAct of cleaning one's hands
- HandednessPreference or tendency to use a specific hand
- HangoverDiscomfort following alcohol consumption
- Hantavirus pulmonary syndromeViral pulmonary disease of humans
- Harm reductionPublic health policies which lessen negative aspects of problematic activities
- Hashimoto's encephalopathyHashimoto's encephalopathy, also known as steroid-responsive encephalopathy associated wit
- Hashimoto's thyroiditisAutoimmune disease
- Haversian canalHaversian canals (sometimes canals of Havers, osteonic canals or central canals) are a ser
- HazardSituation or object that can cause harm
- HCPCS Level 2HCPCS Level II codes are alphanumeric medical procedure codes, primarily for non-physician
- Head and neck cancerCancer arises in the head or neck region
- Head injurySerious trauma to the cranium
- Head lice infestationMedical condition
- Head shavingShaving the hair from a person's head
- HeadachePain in the head, neck, or face
- Health and Welfare CanadaThe Department of National Health and Welfare (NHW), commonly known as Health and Welfare
- Health at Every SizeMovement to de-emphasize weight loss as a health goal
- Health CanadaGovernment department
- Health care qualityValue associated with health care
- Health clubVenue housing physical exercise equipment
- Health dataHealth data is any data "related to health conditions, reproductive outcomes, causes of de
- Health economicsBranch of economics
- Health EconomicsHealth Economics is a monthly peer-reviewed academic journal published by John Wiley & Son
- Health educationEducation for awareness of and influence on the attitude of health
- Health effects of pesticidesHow pesticides affect human health
- Health effects of saltConditions associated with the consumption of either too much or too little salt
- Health effects of smoking tobaccoCircumstances, mechanisms, and factors of tobacco consumption on human health
- Health effects of sunlight exposureExposure of skin to ultraviolet radiation from sunlight presents both positive and negativ
- Health equitySocial equity in health
- Health facilityAny location at which medicine is practiced regularly
- Health in YemenMuch of Yemen's health care developments were undone after the escalation of conflict in 2
- Health informaticsComputational approaches to health care
- Health information managementHealth information management (HIM) is information management applied to health and health
- Health Insurance Portability and Accountability ActUnited States federal law concerning health information
- Health policyPolicy area that deals with the health system of a country or other organization
- Health professionalIndividual who provides medical treatments and health advice
- Health professional requisitesHealth professional requisites refer to the regulations used by countries to control the q
- Health promotionProcess of enabling people to increase control over, and to improve, their health
- Health reimbursement accountA Health Reimbursement Arrangement, also known as a Health Reimbursement Account (HRA), is
- Health securityHealth security is a concept that encompasses activities and measures across sovereign bou
- Healthcare industryEconomic sector focused on health
- Healthy dietType of diet
- Healthy HowardHealthy Howard is a county-sponsored health care program offered to certain uninsured resi
- Heart failureFailure of the heart to provide sufficient blood flow throughout the body
- Heart murmurMedical condition
- Heart rateSpeed of the heartbeat, measured in beats per minute
- Heart soundsNoise generated by the heart
- Heart transplantationSurgical transplant procedure
- HeartburnBurning sensation felt behind the breastbone
- Heat illnessCondition caused by the failure of the human body to dissipate heat in a hot environment
- Heat strokeCondition caused by excessive exposure to high temperatures
- Heat syncopeHeat syncope is fainting or dizziness as a result of overheating (syncope is the medical t
- Heavy menstrual bleedingMenstrual period with excessive blood flow
- Heinrich BiltzHeinrich Biltz (26 May 1865 – 29 October 1943) was a German chemist and professor.
- HELLP syndromeHELLP syndrome is a complication of pregnancy; the acronym stands for hemolysis, elevated
- HelminthiasisAny macroparasitic disease caused by helminths
- HemangiopericytomaA hemangiopericytoma is a type of soft-tissue sarcoma that originates in the pericytes in
- HematemesisVomiting of blood
- HematocheziaBowel movement consisting of fresh blood
- Hematologic diseaseDisorders of the blood and related organs
- HematomaLocalized bleeding outside of blood vessels
- Hematopoietic stem cell transplantationMedical procedure to replace blood or immune stem cells
- HematosalpinxHematosalpinx (sometimes also hemosalpinx) is a medical condition involving bleeding into
- HematuriaPresence of blood in urine
- HemianopsiaHemianopsia, or hemianopia, is a loss of vision or blindness (anopsia) in half the visual
- HemiparesisWeakness of one entire side of the body
- HemodialysisMedical procedure for purifying blood
- HemoptysisBloody mucus from coughing
- HemorrhoidVascular structures in the anal canal
- HemothoraxA hemothorax (derived from hemo- [blood] + thorax [chest], plural hemothoraces) is an accu
- HeparinAnticoagulant
- Hepatic artery thrombosisHepatic artery thrombosis occurs when a blood clot forms in the artery that provides blood
- Hepatitis AAcute infectious disease of the liver
- Hepatitis BHuman viral infection
- Hepatitis B vaccineVaccine against hepatitis B
- Hepatitis CHuman viral infection
- Hepatitis DHuman infectious disease
- Hepatitis EHuman disease caused by Orthohepevirus A
- Hepatitis E virusSpecies of virus
- Hepatocellular carcinomaCommon type of liver cancer
- HepatologyMedical specialty
- HepatosplenomegalyHepatosplenomegaly (commonly abbreviated HSM) is the simultaneous enlargement of both the
- HepatotoxicityLiver damage caused by a drug or chemical
- Herd immunityConcept in epidemiology
- Hereditary diffuse gastric cancerHereditary diffuse gastric cancer (HDGC) is an inherited genetic syndrome most often cause
- Hereditary spastic paraplegiaHereditary spastic paraplegia (HSP) is a group of inherited diseases whose main feature is
- HerniaAbnormal exit of tissues or organs from the cavity they usually reside in
- HeroinOpioid analgesic and recreational drug
- Herpes esophagitisMedical condition
- Herpes simplex encephalitisEncephalitis associated with herpes simplex virus
- Herpes simplex keratitisMedical condition
- Herpetic gingivostomatitisInflammation of the mouth, lips, and gums, often due to herpes infection
- Herpetic whitlowFingertip skin lesion due to infection by the herpes virus
- Hiatal herniaEntrance of abdominal organs into the middle chest through the diaphragm
- Hib vaccineHaemophilus influenzae type B vaccine
- HiccupInvoluntary contraction of the diaphragm
- Hidradenitis suppurativaHuman disease
- HidradenomaHidradenoma refers to a benign adnexal tumor of the apical sweat gland. These are 1–3 cm t
- High cholesterolHigh levels of cholesterol in the blood
- High-deductible health planIn the United States, a high-deductible health plan (HDHP) is a health insurance plan with
- High-grade serous carcinomaMedical condition
- High-intensity interval trainingExercise strategy
- High-risk pregnancyMedical condition
- HilotAncient Filipino art of healing
- HipAnatomical region between the torso and the legs
- Hip fractureBroken bone in hip joint region
- Hip painPain in the hip is the experience of pain in the muscles or joints in the hip/ pelvic regi
- HirsutismExcessive hair growth on parts of the body where hair is usually minimal
- Histamine H4 receptorThe histamine H4 receptor, like the other three histamine receptors, is a member of the G
- HistocompatibilityHistocompatibility, or tissue compatibility, is the property of having the same, or suffic
- HistopathologyMicroscopic examination of tissue to study and diagnose disease
- Histoplasma duboisiiHistoplasma duboisii is a saprotrophic fungus responsible for the invasive infection known
- Historical annual reformulations of the influenza vaccineSince 1999, the World Health Organization (WHO) has issued annual recommendations for infl
- History of COVID-19 vaccine developmentScientific work to develop a vaccine for COVID-19
- History of general anesthesiaThroughout recorded history, attempts at producing a state of general anesthesia can be tr
- History of leprosyThe history of leprosy was traced to its origins by an international team of 22 geneticist
- Histrionic personality disorderPersonality disorder involving excessive emotionality and attention-seeking
- HIV and pregnancyHIV transmission route
- HIV capsid inhibitionIn the management of HIV/AIDS, HIV capsid inhibitors are antiretroviral medicines that tar
- HIV-associated lipodystrophyHIV-associated lipodystrophy is a condition characterized by loss of subcutaneous fat asso
- HIV/AIDS denialismFalse belief that HIV does not cause AIDS
- HIV/AIDS in AsiaIn 2008, 4.7 million people in Asia were living with human immunodeficiency virus (HIV). A
- HIV/AIDS in CanadaHIV/AIDS was first detected in Canada in 1982. In 2018, there were approximately 62,050 pe
- HivesSkin disease characterized by red, raised, and itchy bumps
- HLA-DQ2HLA-DQ2 (DQ2) is a serotype group within HLA-DQ (DQ) serotyping system. The serotype is de
- HLA-DQ7HLA-DQ7 (DQ7) is an HLA-DQ serotype that recognizes the common HLA DQB1*0301 and the less
- HLA-DQ8HLA-DQ8 (DQ8) is a human leukocyte antigen serotype within the HLA-DQ (DQ) serotype group.
- HLA-DR4HLA-DR4 (DR4) is an HLA-DR serotype that recognizes the DRB1*04 gene products. The DR4 ser
- HMG-CoA reductaseHMG-CoA reductase (3-hydroxy-3-methyl-glutaryl-coenzyme A reductase, official symbol HMGCR
- Hoarding disorderBehavioral pattern
- Hodgkin lymphomaType of blood and immune-system cancer
- Holistic dentistryAlternative medicine for dentistry
- Hologram braceletUnproven performance-enhancing device
- Homatropine methylbromideHomatropine methylbromide (INN; also known as methylhomatropine bromide) is a quaternary a
- Home careHealth care and/or supportive care provided in a patient's home
- Home hemodialysisHome hemodialysis (HHD) is the provision of hemodialysis to purify the blood of a person w
- HomeopathyPseudoscientific system of alternative medicine
- Homeopathy (journal)Homeopathy is a peer-reviewed medical journal covering research, reviews, and debates on a
- Hong Kong flu1968–70 flu pandemic
- Honor suicideAspect of suicide
- Hormonal contraceptionBirth control methods that act on the endocrine system
- Hormone replacement therapyHormone therapy used to treat symptoms of menopause
- Hormone-sensitive cancerA hormone-sensitive cancer, or hormone-dependent cancer, is a type of cancer that is depen
- Horseradish peroxidaseThe enzyme horseradish peroxidase (HRP), found in the roots of horseradish, is used extens
- HospiceType of health care for the terminally ill
- Hospital-acquired infectionInfection spread in hospitals or health care facilities
- HPV vaccineClass of vaccines against human papillomavirus
- Huarache (running shoe)Huaraches are an open type of outdoor footwear, consisting of a sole held to the wearer's
- Human anatomyScientific study of the morphology of the human body
- Human anusExternal opening of the rectum
- Human backBody part
- Human body temperatureTypical temperature range found in humans
- Human body weightPerson's mass or weight
- Human coronavirus HKU1Species of virus
- Human digestive systemDigestive system in humans
- Human hair colorPigmentation of human hair follicles
- Human headUpper portion of the human body
- Human Head StudiosHuman Head Studios, Inc. was an American video game developer located in Madison, Wisconsi
- Human jaw shrinkageHuman jaw shrinkage is the phenomenon of continued size reduction of the human mandible an
- Human microbiomeMicroorganisms in or on human skin and biofluids
- Human mouthPart of human anatomy
- Human musculoskeletal systemOrgan system that gives humans the capacity to move
- Human noseFeature of the human face
- Human nutritionNutrients supporting human health
- Human parasiteParasites which use humans as a host
- Human penisHuman male external reproductive organ
- Human reproductive systemOrgans involved in reproduction
- Human skinOrgan covering the outside of the human body
- Human skin colorHuman skin color, also known as skin tone, ranges from the darkest brown to the lightest h
- Human T-lymphotropic virus 1Species of virus
- Human toothCalcified whitish structure in humans' mouths used to break down food
- Human variabilityRange of possible values for any characteristic of human beings
- Human–animal breastfeedingHuman to animal breastfeeding has been practiced in some different cultures during various
- Humerus fractureA humerus fracture is a break of the humerus bone in the upper arm. Symptoms may include p
- HumorismAncient Greek and Roman system of medicine involving four fluid types
- Hunger (physiology)Sensation experienced when one feels the physiological need to eat food
- Huntington's diseaseInherited neurodegenerative disorder
- HydrocephalusAbnormal increase in cerebrospinal fluid in the ventricles of the brain
- Hydrocephalus (trilobite)Hydrocephalus ("water head") is an extinct genus of redlichiid trilobite that was very com
- HydrocodoneOpioid drug used in pain relief
- HydrocortisoneGlucocorticoid and mineralocorticoid hormone Cortisol supplied as a medication
- Hydrogen breath testA hydrogen breath test (or HBT) is used as a diagnostic tool for small intestine bacterial
- HydromorphoneOpioid medication used for pain relief
- HydronephrosisDilation of the renal pelvis due to obstruction of urine flow
- HydrotherapyAlternative medicine using water for pain relief and treatment
- HydrothoraxHydrothorax is the synonym of pleural effusion in which fluid accumulates in the pleural c
- HydroxyzineAntihistamine drug
- HyperaldosteronismHyperaldosteronism is a medical condition wherein too much aldosterone is produced. High a
- HyperandrogenismExcess androgens in the body
- Hyperbaric medicineMedical treatment at raised ambient pressure
- Hyperemesis gravidarumExcessive vomitings during pregnancy
- HyperendemicIn epidemiology, the term hyperendemic disease is used to refer to a disease which is cons
- HyperestrogenismHyperestrogenism, hyperestrogenic state, or estrogen excess, is a medical condition charac
- HyperglycemiaToo much blood sugar, usually because of diabetes
- HyperinsulinemiaHyperinsulinemia is a condition in which there are excess levels of insulin circulating in
- HyperkinesiaHyperkinesia refers to an increase in muscular activity that can result in excessive abnor
- HyperlipidemiaAbnormally elevated levels of lipids or lipoproteins in the blood
- Hyperosmolar hyperglycemic stateHyperosmolar hyperglycemic state (HHS), also known as hyperosmolar non-ketotic state (HONK
- HyperparathyroidismIncrease in parathyroid hormone levels
- HyperpigmentationDarkening of an area of skin or nails due to increased melanin
- HyperplasiaHyperplasia (from ancient Greek ὑπέρ huper 'over' + πλάσις plasis 'formation'), or hyperge
- HypersensitivityOverreaction of the immune system to an antigen
- Hypersomatotropism (veterinary)Hypersomatotropism, also known as acromegaly, is an endocrine disorder caused by excessive
- HypersomniaNeurological disorder of excessive time spent sleeping or excessive sleepiness
- Hypertensive disease of pregnancyMedical condition
- Hypertensive heart diseaseMedical condition
- HyperthermiaElevated body temperature due to failed thermoregulation
- HyperthyroidismExcessive production of thyroid hormone
- HyperthyroxinemiaHyperthyroxinemia is a thyroid disease where the serum levels of thyroxine are higher than
- HypertoniaHypertonia is a term sometimes used synonymously with spasticity and rigidity in the liter
- HypertriglyceridemiaHigh triglyceride blood levels
- HyperuricemiaExcess uric acid in the blood
- HypervigilanceNervous system condition
- HypnoticDrug whose use induces sleep
- HypoalbuminemiaHypoalbuminemia (or hypoalbuminaemia) is a medical sign in which the level of albumin in t
- HypochondriaExcessive fear of developing illness
- HypochondroplasiaHypochondroplasia (HCH) is a developmental disorder caused by an autosomal dominant geneti
- HypoesthesiaPartial loss of sensitivity to sensory stimuli
- HypoestrogenismHypoestrogenism, or estrogen deficiency, refers to a lower than normal level of estrogen.
- HypogammaglobulinemiaHypogammaglobulinemia is an immune system disorder in which not enough gamma globulins are
- HypogeusiaDiminished sense of taste
- HypoglycemiaDecrease in blood sugar
- HypogonadismDiminished activity of the gonads
- HypokalemiaInsufficient potassium in the blood
- HypomaniaMental health condition
- HyponatremiaLow sodium concentration in the blood
- HypopigmentationHypopigmentation is characterized specifically as an area of skin becoming lighter than th
- HyposmiaReduced ability to smell and to detect odors
- HypotensionAbnormally low blood pressure
- HypothyroidismInsufficient production of thyroid hormones
- HypouricemiaHypouricemia or hypouricaemia is a level of uric acid in blood serum that is below normal.
- Hypovolemic shockMedical emergency due to low blood volume
- HypoxemiaAbnormally low level of oxygen in the blood
- HysterectomySurgical removal of the uterus
- HysteriaExcess, ungovernable emotion