| ABCDES | abnormal alignment, bones-periarticular osteoporosis, cartilage-joint space loss, deformities, margi... |
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| ACVD | acute cardiovascular disease, atherosclerotic cardiovascular disease |
| ADV | adenovirus; adventitia; Aleutian disease virus; Aujeszky disease virus |
| ASCVD | arteriosclerotic cardiovascular disease; atherosclerotic cardiovascular disease |
| ASHD | arteriosclerotic heart disease; atrioseptal heart disease |
| Aujeszky's disease virus | A herpesvirus causing pseudorabies in swine. Synonym: Aujeszky's disease virus. (05 Mar 2000) |
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| Australian X disease | A severe encephalitis with a high mortality rate occurring in the Murray Valley of Australia; the disease is most severe in children and is characterised by headache, fever, malaise, drowsiness or convulsions, and rigidity of the neck; extensive brain damage may result; it is caused by the Murray Valley encephalitis virus (genus Flavivirus). Synonym: Australian X disease, Australian X encephalitis. (05 Mar 2000) |
| Australian X disease virus | A group B arbovirus of the genus Flavivirus that causes Murray Valley encephalitis; it is transmitted by Culex mosquitoes, and also infects birds and horses. Synonym: Australian X disease virus, MVE virus. (05 Mar 2000) |
| autoimmune disease | <disease> A disease process that involves the production of host antibodies to host tissue. (27 Sep 1997) |
| aviator's disease | Syndrome resembling decompression sickness occurring in occupants of airplanes that reach very high altitudes without adequate pressurization of the cabin. See: decompression sickness. (05 Mar 2000) |
| Ayerza's disease | <syndrome> Sclerosis of the pulmonary arteries in chronic cor pulmonale; associated with severe cyanosis, it is a condition resembling polycythemia vera but resulting from primary pulmonary arteriosclerosis or primary pulmonary hypertension and characterised by plexiform lesions of arterioles. Synonym: Ayerza's disease, cardiopathia nigra, plexogenic pulmonary arteriopathy. (05 Mar 2000) |
| Azorean disease | A rare form of hereditary ataxia, characterised by onset in early adult life of progressive, spinocerebellar and extrapyramidal disease with external ophthalmoplegia, rigidity dystonia symptoms, and, often, peripheral amyotrophy; found predominantly in people of Azorean ancestry; autosomal dominant inheritance. Synonym: Azorean disease, Portuguese-Azorean disease. Origin: Surnames of two families studied in major descriptions of the disease. (05 Mar 2000) |
| bacterial wilt disease | <botany> A plant disease common in cucumber and muskmelon caused by the bacteria Erwinia tracheiphila which causes wilting and shriveling of the stems and leaves. (09 Oct 1997) |
| Baelz' disease | An acquired disorder, of unknown aetiology, of the lower lip characterised by swelling, ulceration, crusting, mucous gland hyperplasia, abscesses, and sinus tracts. Synonym: Baelz' disease, myxadenitis labialis, Volkmann's cheilitis. (05 Mar 2000) |
| Balo's disease | Encephalitis that is clinically similar to adrenoleukodystrophy, but pathologically characterised by concentric globes or circles of demyelination of cerebral white matter separated by normal tissue. Synonym: Balo's disease. (05 Mar 2000) |
| Baltic myoclonus disease | One of the familial light sensitive myoclonic epilepsies. Unlike Lafora body polymyoclonus, where inclusion bodies are seen in the brain cells, the prognosis is often favourable. Probably an autosomal recessive disorder. (05 Mar 2000) |
| Bamberger-Marie disease | hypertrophic pulmonary osteoarthropathy |
| Bamberger's disease | A spasmodic affection of the muscles of the lower extremities. Synonym: Bamberger's disease, dancing spasm, Gowers disease. (05 Mar 2000) |
| Bang's disease | A disease in cattle caused by Brucella abortus; in pregnant cows, characterised by abortion late in pregnancy, followed by retained placenta and metritis; in bulls, orchitis and epididymitis may occur; the organism may localise in the udder and thus appear in milk from infected cows. Synonym: Bang's disease. (05 Mar 2000) |
| Bannister's disease | A vascular reaction involving the deep dermis or subcutaneous or submucal tissues, representing localised oedema caused by dilatation and increased permeability of the capillaries and characterised by development of giant wheals. (18 Nov 1997) |