HA
- Hair loss
- Hair-pulling disorder (See: Trichotillomania (TTM))
- halitosis (See: Bad breath)
- Hallux valgus (See: Bunion)
- Hammertoe and mallet toe
- Hamstring injury
- Hand fracture (See: Broken hand)
- Hand-foot-and-mouth disease
- Hay fever (See: Allergic rhinitis)
HE
- Headache in children
- Headache, chronic daily (See: Chronic daily headaches)
- Headache, cluster (See: Cluster headache)
- Headache, epidural (See: Spinal headaches)
- Headache, exercise (See: Exercise headaches)
- Headache, low-pressure (See: Spinal headaches)
- Headache, post-dural puncture (See: Spinal headaches)
- Headache, spinal (See: Spinal headaches)
- Headache, thunderclap (See: Thunderclap headaches)
- Headaches, tension (See: Tension headaches)
- Hearing loss
- Heart arrhythmia
- Heart attack (See: Myocardial infarction)
- Heart defects in adults (See: Congenital heart disease in adults)
- Heart disease
- Heart failure
- Heart murmurs
- Heart palpitations
- Heart valve disease
- Heavy menstrual bleeding
- Hemangiomas
- Hemifacial spasm
- Hemolytic Uremic Syndrome
- Hemolytic uremic syndrome (HUS)
- Hemophilia
- Hemorrhoids
- Hepatic hemangioma (See: Liver Hemangioma)
- Hepatitis A
- Hepatitis B
- Hepatitis C
- Hepatitis, autoimmune (See: Autoimmune hepatitis)
- Hepatitis, toxic (See: Toxic hepatitis)
- Hepatocellular carcinoma (See: Liver cancer)
- Hernia (See: Umbilical hernia)
- Herniated disk
- Herpes zoster (See: Shingles)
- Herpes zoster oticus (See: Ramsay Hunt syndrome)
HI
- High cholesterol
- High-flow priapism (See: Non-ischemic priapism, high-flow priapism)
- Hip (See: Hip fracture)
- Hip dysplasia
- Hip impingement (See: Femoroacetabular impingement)
- Hip labral tear
- Hirschsprung's disease
- HIV/AIDS
- Hives (See: Chronic hives, Chronic idiopathic urticaria)
- Hives and angioedema
HO
- Hoarseness, Dysphonia
- Hodgkin's lymphoma
- Horner syndrome
- Housemaid’s knee (See: Knee bursitis)
HP
- HPV, Human papillomavirusGenital warts (See: Genital warts)
HY
- Hydrocele
- Hydrocephalus
- Hypercholesterolemia, hyperlipidemia (See: High cholesterol)
- Hyperopia (See: Farsightedness)
- Hypertension (See: Elevated blood pressure )
- Hyperthyroidism
- Hypertrophic cardiomyopathy
- Hypopituitarism
- Hypoplastic left heart syndrome
- Hypothermia
- Hypothyroidism (see: Hypothyroidism, underactive thyroid)
- Hypothyroidism, underactive thyroid
