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H1N1 (swine) influenzaH2 receptor antagonists overdose
Hair bleach poisoning
Hair dye poisoning
Hair spray poisoning
Hair straightener poisoning
Hair tonic
Hairy cell leukemia
Hallervorden-Spatz disease
Hammer toe
Hand-foot-mouth disease
Hand lotion poisoning
Hantavirus
Hartnup disorder
Head injury
Head lice
Hearing loss - infants
Heart attack
Heart attack first aid
Heart failure
Heat emergencies
Helicobacter pylori
HELLP syndrome
Hemangioma
Hemochromatosis
Hemoglobin C disease
Hemolytic anemia
Hemolytic-uremic syndrome
Hemophilia
Hemophilia A
Hemophilia B
Hemorrhagic disease of the newborn
Hemorrhoids
Hemothorax
Henoch-Schonlein purpura
Hepatic encephalopathy
Hepatic hemangioma
Hepatic ischemia
Hepatic vein obstruction (Budd-Chiari)
Hepatitis
Hepatitis A
Hepatitis B
Hepatitis C
Hepatocellular carcinoma
Hepatocerebral degeneration
Hepatorenal syndrome
Hereditary angioedema
Hereditary elliptocytosis
Hereditary fructose intolerance
Hereditary ovalocytosis
Hereditary urea cycle abnormality
Hernia
Herniated disk
Heroin overdose
Herpangina
Herpes esophagitis
Herpes labialis
Herpes simplex
Herpetic stomatitis
Hiatal hernia
High arch
High blood pressure - infants
Hirschsprung's disease
Histiocytosis
Histoplasmosis
Histoplasmosis - acute (primary) pulmonary
Histoplasmosis - chronic pulmonary
Histoplasmosis - disseminated
Histrionic personality disorder
HIV infection
Hives
Hodgkin's lymphoma
Homocystinuria
Hookworm
Horner syndrome
Hospital-acquired pneumonia
Hot tub folliculitis
Household glue
Human bites
Hunter syndrome
Huntington's disease
Hurler syndrome
Hydatidiform mole
Hydrocarbon pneumonia
Hydrocele
Hydrocephalus
Hydrochloric acid poisoning
Hydrocodone/oxycodone overdose
Hydrocodone and acetaminophen overdose
Hydrofluoric acid poisoning
Hydrogen peroxide poisoning
Hydromorphone overdose
Hydrops fetalis
Hydroxyzine overdose
Hymenolepiasis
Hyperaldosteronism - primary and secondary
Hypercalcemia
Hyperemesis gravidarum
Hyperglycemia - infants
Hyperhidrosis
Hyperimmunoglobulin E syndrome
Hyperkalemia
Hyperkalemic periodic paralysis
Hyperparathyroidism
Hypersensitivity pneumonitis
Hypersplenism
Hypertension
Hypertensive retinopathy
Hyperthyroidism
Hypertrophic cardiomyopathy
Hyperviscosity - newborn
Hypervitaminosis A
Hypervitaminosis D
Hyphema
Hypocalcemia - infants
Hypochondria
Hypoglycemia
Hypogonadism
Hypogonadotropic hypogonadism
Hypokalemia
Hypokalemic periodic paralysis
Hyponatremia
Hypoparathyroidism
Hypophosphatemia
Hypopituitarism
Hypoplastic left heart syndrome
Hypospadias
Hypotension
Hypothalamic dysfunction
Hypothalamic tumor
Hypothermia
Hypothyroidism
Hypothyroidism - primary
Hypovolemic shock