Medicine

Hemorrhoid

Hemorrhoidolysis

Hemorrhoidolysis (Galvanic Electrotherapy)

Hemostasis

Hemostasis: the body's process for preventing and stopping bleeding

Hemostasis is the physiological process that stops bleeding by sealing injured blood vessels, involving vasoconstriction, platelet plug formation, coagulation and later clot remova

Hepatitis

Hepatitis A

Hepatitis A: causes, symptoms, prevention, and public-health impact

Hepatitis B

Hepatitis C

Hepatitis C: causes, transmission, diagnosis, treatment and public health

Hepatoblastoma

Hepatoblastoma: Pediatric liver tumor overview

Hepatocellular carcinoma

Herd immunity

Herd immunity: concept, mechanisms, and public health implications

Hereditary haemochromatosis

Hernia

Heroin

Herpes simplex

Herpes simplex: causes, symptoms, transmission, and management

Herpes simplex (HSV) is a common viral infection causing oral and genital lesions. This article explains types, symptoms, latency, diagnosis, treatment, prevention, complications,

Herpes zoster

Herpes zoster (shingles): causes, symptoms, treatment and prevention

Herpes zoster, or shingles, is a reactivation of the varicella‑zoster virus causing a painful, blistering rash. Age, immune status, antivirals, and vaccination affect risk, severit

Hiccups

Hiccups: causes, mechanisms, common triggers, remedies, and clinical notes

Hip dysplasia

Hip dysplasia: causes, signs, diagnosis and treatment

Hip replacement

Histamine

Hodgkin lymphoma

Homeopathy

Hospice

Hospice: compassionate end-of-life care and services

Hospice provides comfort-focused medical, emotional and spiritual care for people nearing the end of life. It emphasizes symptom relief, family support, interdisciplinary teams and

Hospital

Human chorionic gonadotropin

Human papillomavirus

Human papillomavirus (HPV): causes, types, prevention and treatment

Human penis size

Human penis size: measurement, variation, and medical facts

Human T-lymphotropic virus

Human T-lymphotropic virus (HTLV)

Humorism

Humorism: the ancient doctrine of four bodily fluids, temperament, and treatment

Humorism (humoralism) is an ancient medical theory that health and temperament depend on balance among four bodily fluids. It shaped Greco-Roman, Islamic, and medieval medicine unt

Hunger

Hunger: physiological sensation, causes, and social impact

Huntington's disease

Huntington's disease — inherited neurodegenerative disorder

Hygiene

Hypercholesterolemia

Hypercholesterolemia: causes, risks, diagnosis, and management

Hyperglycemia

Hyperglycemia — high blood sugar: causes, symptoms, diagnosis, treatment

Hyperglycemia is elevated blood glucose. This article explains causes, signs, testing, acute dangers, long-term complications, treatment and prevention in clear, practical terms.

Hyperhidrosis

Hyperhidrosis — excessive sweating disorder

Hyperkalemia

Hyperkalemia: causes, effects, diagnosis and treatment

Hyperopia

Hypersomnia

Hypersomnia (excessive sleepiness)

Hypertension

Hypertension (High Blood Pressure)

Hyperthermia

Hyperthermia: causes, symptoms, treatment, and prevention

Hyperthyroidism

Hypnotic

Hypoactive sexual desire disorder

Hypochondriasis

Hypodermic needle

Hypoglycemia

Hyponatremia

Hypopharyngeal cancer

Hypotension

Hypotension (Low Blood Pressure)