| OD | Doctor of Optometry; obtained absorbance; occipital dysplasia; occupational dermatitis; occupational... |
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| OHD | hydroxyvitamin D; Office of Human Development; Ondine-Hirschsprung disease; organic heart disease |
| PAIN | pyoderma gangrenosum, aphthous stomatitis, inflammatory eye disease, erythema nodosum [disorders ass... |
| PAOD | peripheral arterial occlusive disease; peripheral arteriosclerotic occlusive disease |
| PKD | polycystic kidney disease; proliferative kidney disease |
| Raussly disease | A rare autosomal dominant neurological disorder with many of the clinical features of hereditary hypertrophic sensorimotor polyneuropathy combined with an essential tremor. Synonym: hereditary areflexic dystasia. (05 Mar 2000) |
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| venereal disease | <microbiology> A disease contracted through sexual intercourse. Examples include syphilis, gonorrhoea, chlamydia and lymphogranuloma venereum. Synonym: sexually transmitted disease. (12 Jan 1998) |
| Venereal Disease Research Laboratory | <microbiology> A blood test used to diagnose syphilis. Read as nonreactive or negative if you do not have syphilis. The Venereal Disease Research Laboratory can also be positive is cases of leprosy, malaria, mononucleosis, lupus, hepatitis A and pregnancy. Positive Venereal Disease Research Laboratory tests are usually followed up by a more specific test (FTA antibodies). (12 Jan 1998) |
| Manson's disease | Schistosomiasis caused by schistosoma mansoni. It is endemic in africa, the middle east, south america, and the caribbean and affects mainly the bowel, spleen, and liver. (12 Dec 1998) |
| Rayer's disease | Xanthomatosis with hypercholesterolaemia, resulting from biliary cirrhosis. Synonym: Rayer's disease. (05 Mar 2000) |
| Raynaud's disease | <disease> Paroxysmal spasm of the digital arteries causing pallor (blanching) of the fingers and toes. Maurice Raynaud, French physician (1834-81). (27 Sep 1997) |
| veno-occlusive disease | <haematology, oncology> A disease that sometimes occurs following high-dose chemotherapy or radiation, in which the blood vessels that carry blood through the liver become swollen and clogged. Acronym: VOD (12 Jan 1998) |
| veno-occlusive disease of the liver | Obliterating endophlebitis of small hepatic vein radicles, described in Jamaican children, associated with ingestion of toxic plant substances in bush tea; causes ascites, which may progress to cirrhosis. (05 Mar 2000) |
| maple bark disease | <radiology> Type of extrinsic allergic alveolitis, source: moldy maple bark in saw mills, organism: Cryptostroma corticale (12 Dec 1998) |
| maple syrup urine disease | Hereditary disease due to deficiency of an enzyme involved in amino acid metabolism, characterised by urine that smells like maple syrup. (12 Dec 1998) |
| marble bone disease | The formation of abnormally dense bone, as opposed to osteoporosis. (18 Nov 1997) |
| genetic disease | <biology, genetics> A disease, such as cystic fibrosis, that has its origin in changes to the genetic material, DNA. Usually refers to diseases that are inherited in a Mendelian fashion, although noninherited forms of cancer also result from DNA mutation. (07 May 1998) |
| Marburg disease | Infection with an unusual rhabdovirus composed of RNA and lipid, tentatively assigned to the family of Filoviridae. Virus is "pantropic" and affects most organ systems.The disease is characterised by a prominent rash and haemorrhages in many organs and is often fatal. First seen among laboratory workers in Marburg, Germany, exposed to African green monkeys. Some person-to-person spread has been observed. Attempts to isolate virus should be done only in high-security laboratories. Synonym: Marburg virus disease. (05 Mar 2000) |
| marburg virus disease | An RNA virus infection of rhesus, vervet, and squirrel monkeys transmissible to man. (12 Dec 1998) |
| marchiafava-bignami disease | <radiology> Italian wine-drinkers' disease, symmetric demyelinization: corpus callosum, white matter, anterior commisure (12 Dec 1998) |