H. flu meningitis Hairy cell leukemia Hairy leukoplakia Hallervorden-Spatz disease Hammer toe Hansens disease Hantavirus Hartnup disorder Head lice Headache - migraine Headache - migraine with aura Headache - migraine without aura Headache - mixed tension migraine Hearing loss - occupational Heart valve pulmonary stenosis HELLP syndrome Hematocele Hemochromatosis Hemoglobinopathy Hemolytic-uremic syndrome Hemophilia Hemophilia A Hemorrhage - intracerebral Hemorrhage - intracerebral (lobar) Hemorrhage - subarachnoid Hemorrhoids Hemothorax Hepatic ischemia Hepatitis Hepatitis A Hepatitis B Hepatitis C Hepatolenticular degeneration Hepatorenal syndrome Hereditary angioedema Hereditary hemorrhagic telangiectasia Hereditary ovalocytosis Hernia Hernia - hiatal Herpangina Herpes esophagitis Herpes oticus Herpes simplex Herpes zoster Herpetic stomatitis High arch High blood glucose level - infants High potassium Histoplasmosis Histoplasmosis - acute (primary) pulmonary Histoplasmosis - disseminated Histrionic personality disorder HIV infection Hives HLHS Hookworm Horner syndrome Hospital-acquired pneumonia Hot tub folliculitis Hunchback Hunter syndrome Huntington chorea Hutchinson-Gilford syndrome Hyaline membrane disease Hydatid mole Hydrocarbon pneumonia Hydrocele Hydrocephalus Hydronephrosis Hydrops fetalis Hyper IgE syndrome Hypercalcemia Hypercalciuria - idiopathic Hypercoagulable states Hyperemesis gravidarum Hyperimmunization Hyperkalemic periodic paralysis Hyperparathyroidism Hyperpyrexia - malignant Hyperserotonemia Hypersomnia - idiopathic Hypersplenism Hypertension - renovascular Hypertensive heart disease Hypertensive intracerebral hemorrhage Hypertensive retinopathy Hyperthyroidism Hypertrophic scar Hyperviscosity - newborn Hypervitaminosis A Hypervitaminosis D Hyphema Hypoactive sexual desire Hypochondria Hypoglycemia Hypokalemia Hypokalemic periodic paralysis Hypomagnesemia Hypomelanosis of Ito Hypoparathyroidism Hypophosphatemia Hypopituitarism Hypopituitarism Syndrome Hypospadias Hypothalamic dysfunction Hypothalamic glioma Hypothyroidism - primary Hypothyroidism - secondary Hypovolemic shock