H

• H. pylori infection
• H1N1 flu (See: Swine flu (H1N1 flu))
• Hair loss
• Hair-pulling disorder (See: Trichotillomania)
• Hairy cell leukemia
• Hairy tongue (See: Black, hairy tongue)
• Halitosis (See: Bad breath)
• Hammertoe and mallet toe
• Hamstring injury
• Hand fracture (See: Broken wrist/broken hand)
• Hand numbness
• Hand pain (See: Wrist pain)
• Hand-foot-and-mouth disease
• Hangovers
• Hantavirus pulmonary syndrome
• Hardening of the arteries (See: Arteriosclerosis / atherosclerosis)
• Hashimoto's disease
• Hay fever
• Head lice
• Head trauma, coma (See: Coma)
• Headache, chronic daily (See: Chronic daily headaches)
• Headache, cluster (See: Cluster headache)
• Headache, external compression (See: External compression headaches)
• Headache, ice cream (See: Ice cream headaches)
• Headache, migraine (See: Migraine)
• Headache, primary cough (See: Cough headaches)
• Headache, rebound (See: Rebound headaches)
• Headache, sex (See: Sex headaches)
• Headache, sinus (See: Sinus headaches)
• Headache, spinal (See: Spinal headaches)
• Headache, tension (See: Tension headache)
• Headache, thunderclap (See: Thunderclap headaches)
• Headaches in children
• Headaches, exercise (See: Exercise headaches)
• Hearing loss
• Heart arrhythmias
• Heart attack
• Heart cancer
• Heart defects in adults (See: Congenital heart disease in adults)
• Heart disease
• Heart failure
• Heart murmurs
• Heart palpitations
• Heartburn (See: Indigestion)
• Heartburn
• Heat exhaustion
• Heat rash
• Heatstroke
• Heavy menstrual periods (See: Menorrhagia)
• Hebephrenic schizophrenia (See: Disorganized schizophrenia)
• Heel pain (See: Plantar fasciitis)
• Helicobacter pylori (See: H. pylori infection)
• Heller's syndrome (See: Childhood disintegrative disorder)
• Hemangioma
• Hemangioma, liver (See: Liver hemangioma)
• Hematoma, intracranial (See: Intracranial hematoma)
• Hematuria (See: Blood in urine (hematuria))
• Hemochromatosis
• Hemolytic uremic syndrome (HUS)
• Hemophilia
• Hemorrhoids
• Henoch-Schonlein purpura
• Hepatitis A
• Hepatitis B
• Hepatitis C
• Hepatitis, alcoholic (See: Alcoholic hepatitis)
• Hepatitis, autoimmune (See: Autoimmune hepatitis)
• Hepatitis, toxic (See: Toxic hepatitis)
• Hepatocellular carcinoma (See: Liver cancer)
• Hepatomegaly (See: Enlarged liver)
• Hereditary hemochromatosis (See: Hemochromatosis)
• Hereditary motor and sensory neuropathy (See: Charcot-Marie-Tooth disease)
• Hereditary nonpolyposis colorectal cancer syndrome (See: Lynch syndrome)
• Hereditary progressive arthro-ophthalmopathy (See: Stickler syndrome)
• Hernia, diaphragmatic (See: Hiatal hernia)
• Hernia, hiatal (See: Hiatal hernia)
• Hernia, inguinal (See: Inguinal hernia)
• Hernia, umbilical (See: Umbilical hernia)
• Herniated disk
• Herpes zoster (See: Shingles)
• Herpes zoster oticus (See: Ramsay Hunt syndrome)
• Herpes, genital (See: Genital herpes)
• Hiatal hernia
• Hiccups
• Hidradenitis suppurativa
• High blood cholesterol (See: High cholesterol)
• High blood pressure (See: High blood pressure (hypertension))
• High blood pressure (hypertension)
• High blood pressure in children
• High blood pressure, secondary (See: Secondary hypertension)
• High cholesterol
• High-flow priapism (See: Priapism)
• Hip fracture
• Hip labral tear
• Hirschsprung's disease
• Hirsutism
• Histoplasmosis
• Histrionic personality disorder (See: Personality disorders)
• HIV/AIDS
• Hives and angioedema
• Hives, chronic (See: Chronic hives (urticaria))
• Hoarding
• Hoarse voice (See: Laryngitis)
• Hodgkin's disease (See: Hodgkin's lymphoma)
• Hodgkin's lymphoma
• Hordeolum (See: Sty)
• Horner syndrome
• Hot flashes
• HPV infection
• Human immunodeficiency virus (See: HIV/AIDS)
• Human papillomavirus infection (See: HPV infection)
• Hunchback (See: Kyphosis)
• Hunt's syndrome (See: Ramsay Hunt syndrome)
• Hunter syndrome
• Huntington's disease
• Hurthle cell cancer
• Hutchinson-Gilford progeria syndrome (See: Progeria)
• Hydrocele
• Hydrocephalus
• Hypercalcemia
• Hypercholesterolemia (See: High cholesterol)
• Hypercortisolism (See: Cushing's syndrome)
• Hyperextended knee
• Hyperglycemia in diabetes
• Hyperhidrosis (excessive sweating)
• Hypermenorrhea (See: Menorrhagia)
• Hyperopia (See: Farsightedness)
• Hyperparathyroidism
• Hypersexuality (See: Compulsive sexual behavior)
• Hypertension (See: High blood pressure (hypertension))
• Hypertension, pregnancy-related (See: Preeclampsia)
• Hypertension, pulmonary (See: Pulmonary hypertension)
• Hypertension, white-coat
• Hyperthyroidism
• Hypertrophic cardiomyopathy
• Hypoactive sexual desire disorder (See: Low sex drive in women)
• Hypochondria
• Hypocortisolism (See: Addison's disease)
• Hypoglycemia
• Hypoglycemia, diabetic (See: Diabetic hypoglycemia)
• Hypogonadism, male (See: Male hypogonadism)
• Hypohidrosis (See: Anhidrosis)
• Hypohydration (See: Dehydration)
• Hyponatremia
• Hypoparathyroidism
• Hypopharyngeal cancer (See: Throat cancer)
• Hypopituitarism
• Hypoplastic left heart syndrome
• Hypospadias
• Hypotension (See: Low blood pressure (hypotension))
• Hypothermia
• Hypothyroidism