Hailey-Hailey Disease@
Hairy Leukoplakia@
Hair Loss@
Halitosis@
Hall-Pallister Syndrome@
Hallervorden-Spatz Syndrome@
Hansen's Disease@
Hantavirus@
Hay Fever@
Headaches@
Hearing Disorders@
Heartburn@
Heart Attack@
Heart Diseases@
Heart Failure@
Heart Murmurs@
Heart Transplant@
Heat Related Injuries@
Heel Spurs@
Helicobacter Pylori@
Hemangiomas@
Hematuria@
Hemihypertrophy@
Hemiplegia Alterans@
Hemiplegic Migraine@

Hemochromatosis@
Hemolytic Anemia@
Hemolytic Uremic Syndrome@
Hemophilia@
Hemorrhagic Fevers@
Hemorrhoids@
Hepatic Encephalopathy@
Hepatitis@
Hepatocerebral Encephalopathy@
Hepatolenticular Degeneration@
Hereditary Angioedema@
Hereditary Deafness-Retinitis Pigmentosa@
Hereditary Sensory Motor Neuropathy@
Hereditary Sensory Neuropathy Type III@
Hereditary Spastic Paraplegia@
Hernia@
Herniated Lumbar Disk@
Herpes@
Hidradenitis Suppurativa@
Hirsutism@
Histoplasmosis@
Hives@
Hodgkin's Disease@
Holmes-Adie Syndrome@
Homocystinuria@

Horner Syndrome@
Hughes Syndrome@
Huntington's Disease@
Hydranecephaly@
Hydrocele@
Hydrocephalus@
Hydrosyringomyelia@
Hyperhidrosis@
Hyperhomocysteinemia@
Hyperinsulinemia@
Hyperlexia@
Hyperlipidemia@
Hyperopia@
Hyperparathyroidism@
Hypertension@
Hyperthyroid@
Hyperventilation@
Hypochondria@
Hypoglycemia@
Hypoparathyroidism@
Hypopituitarism@
Hypospadias@
Hypotension@
Hypothermia@
Hypothyroid@