Also known as: Heavy Metal ToxicitySubdivisions: Aluminum Poisoning, Antimony Poisoning, Arsenic Poisoning, Barium Poisoning, Bismuth Poisoning, Cadmium Poisoning, Chromium Poisoning, Cobalt Poisoning, Copper Poisoning, Gold Poisoning, Iron Poisoning, Lead Poisoning, Lithium Poisoning, Manganese Poisoning, Mercury Poisoning, Nickel Poisoning, Phosphorous Poisoning, Platinum Poisoning, Selenium Poisoning, Silver Poisoning, Thallium Poisoning, Tin Poisoning, Zinc Poisoning
Also known as: familial hemiplegic migraine, sporadic hemiplegic migraineSubdivisions: familial hemiplegic migraine type 1, familial hemiplegic migraine type 2, familial hemiplegic migraine type 3
Also known as: hemophagocytic syndrome, HLHSubdivisions: familial hemophagocytic lymphohistiocytosis (FHL), familial erythrophagocytic lymphohistiocytosis, primary hemophagocytic lymphohistiocytosis, secondary hemophagocytic lymphohistiocytosis, macrophage activation syndrome
Also known as: Allergic Purpura, Allergic Vasculitis, Anaphylactoid Purpura, Hemorrhagic Capillary Toxicosis, HSP, Leukocytoclastic Vasculitis, Nonthrombocytopenic Idiopathic Purpura, Peliosis Rheumatica, Rheumatic Purpura, Schonlein-Henoch Purpura, vascular purpuraSubdivisions: Henoch's Purpura, Schonlein's Purpura
Also known as: hepato-renal syndrome, HRSSubdivisions: No subdivisions found
Also known as: angioneurotic edema, hereditary, C1-INH, C1NH, complement component 1 inhibitor deficiency, complement component C1, regulatory component deficiency, esterase inhibitor deficiency, HAE, HANESubdivisions: C1 esterase inhibitor deficiency, type I, angioedema, C1 esterase inhibitor dysfunction, type II, angioedema
Also known as: HHT, Osler-Weber Rendu syndrome, Rendu-Osler-Weber syndromeSubdivisions: hereditary hemorrhagic telangiectasia type 1, hereditary hemorrhagic telangiectasia type 2, juvenile polyposis-hereditary hemorrhagic telangiectasia (JPHT or JPHHT) overlap syndrome
Also known as: primary lymphedemaSubdivisions: hereditary lymphedema, type I (Milroy disease), lymphedema tarda, hereditary lymphedema, type II (Meige disease or lymphedema praecox)
Also known as: holoprosencephaly sequence, HPESubdivisions: alobar holoprosencephaly, semilobar holoprosencephaly, lobar holoprosencephaly, middle interhemispheric fusion
Also known as: Hydrocephaly, Water on the BrainSubdivisions: Benign Hydrocephalus, Communicating Hydrocephalus, Internal Hydrocephalus, Non-Communicating Hydrocephalus, Normal Pressure Hydrocephalus, Obstructive Hydrocephalus
Also known as: HIGM, IHIS, immunodeficiency with hyper IgM syndromeSubdivisions: X-linked hyper IgM syndrome (XHIM), hyper IgM syndrome type 1 (HIGM1), hyper IgM syndrome type 2 (HIGM2), hyper IgM syndrome type 3 (HIGM3), hyper IgM syndrome type 4 (HIGM4), hyper IgM syndrome type 5 (HIGM5)
Subdivisions: Generalized Hyperhidrosis
Subdivisions: acquired hypoparathyroidism, autoimmune hypoparathyroidism, congenital hypoparathyroidism, idiopathic hypoparathyroidism
Also known as: HPP, Rathbun diseaseSubdivisions: hypophosphatasia, perinatal, hypophosphatasia, infantile, hypophosphatasia, childhood (mild versus severe), hypophosphatasia, adult, odontohypophosphatasia, pseudohypophosphatasia
Also known as: HH , hypothalamic hamartoblastoma, hypothalamic hamartoma syndromeSubdivisions: central precocious puberty, epilepsy and related neurobehavioral symptoms