| single-gene diseases | Hereditary disorders caused by a change (mutation) in a single gene. There are thousands of single-gene diseases including achondroplastic dwarfism, huntington disease, cystic fibrosis, sickle cell disease, duchenne muscular dystrophy, and haemophilia. Single-gene diseases typically describe classic simple mendelian patterns of inheritance (as autosomal dominant, autosomal recessive, and x-linked traits) by comparison with polygenic diseases. (12 Dec 1998) |
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| skin and connective tissue diseases | A collective term for diseases of the skin and its appendages and of connective tissue. (12 Dec 1998) |
| skin diseases, bacterial | Skin diseases caused by bacteria. (12 Dec 1998) |
| skin diseases, eczematous | Any of a variety of eruptive skin disorders characterised by erythema, oozing, vesiculation, and scaling. Aetiology is varied. (12 Dec 1998) |
| skin diseases, genetic | Diseases of the skin with a genetic component, usually the result of various inborn errors of metabolism. (12 Dec 1998) |
| skin diseases, infectious | Skin diseases caused by bacteria, fungi, parasites, or viruses. (12 Dec 1998) |
| skin diseases, metabolic | Diseases of the skin associated with underlying metabolic disorders. (12 Dec 1998) |
| skin diseases, papulosquamous | A group of dermatoses with distinct morphologic features. The primary lesion is most commonly a papule, usually erythematous, with a variable degree of scaling on the surface. Plaques form through the coalescing of primary lesions. (12 Dec 1998) |
| skin diseases, parasitic | Skin diseases caused by arthropods, helminths, or protozoa. (12 Dec 1998) |
| skin diseases, vascular | Skin diseases affecting or involving the cutaneous blood vessels and generally manifested as inflammation, swelling, erythema, or necrosis in the affected area. (12 Dec 1998) |
| skin diseases, vesiculobullous | Skin diseases characterised by local or general distributions of blisters. They are classified according to the site and mode of blister formation. Lesions can appear spontaneously or be precipitated by infection, trauma, or sunlight. Aetiologies include immunologic and genetic factors. (12 Dec 1998) |
| skin diseases, viral | Skin diseases caused by viruses. (12 Dec 1998) |
| slow virus diseases | Diseases of viral origin, characterised by incubation periods of months to years, insidious onset of clinical manifestations, and protracted clinical course. Though the disease process is protracted, viral multiplication may not be unusually slow. Conventional viruses produce slow virus diseases such as subacute sclerosing panencephalitis, progressive multifocal leukoencephalopathy (leukoencephalopathy, progressive multifocal), and aids. Diseases produced by unconventional agents were originally considered part of this group. They are now called prion diseases. (12 Dec 1998) |
| social diseases | An obsolete term used to designate venereal disease's, especially gonorrhoea and syphilis. (05 Mar 2000) |
| nail diseases | Diseases of the nail plate and tissues surrounding it. The concept is limited to primates. (12 Dec 1998) |