| 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 |
| bronzed disease | A genetic disease in which the body takes in too much iron from food, this causes excess iron to be deposited in the liver and heart and other organs, eventually leading to organ failure and death. This illness is called bronze diabetes because the kidneys often fail, leading to symptoms similar to those found with diabetes mellitus, and because the deposition of iron into the skin makes the person look like he or she has an all-over tan. It used to be believed that this disease was rare and mainly affected people of Caucasian descent, butin recent years scientists have realised it is more common and affects a wide range of ethnic groups. Some believe that this genetic defect actually helps people (especially women) survive in areas where malnutrition is widespread and iron is scarce in food. Regular venesection may help people suffering from this disease. (09 Oct 1997) |
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| Brooke's disease | Trichoepithelioma. Synonym: keratosis follicularis contagiosa. (05 Mar 2000) |
| Bruck's disease | A disease marked by osteogenesis imperfecta, ankylosis of the joints, and muscular atrophy. (05 Mar 2000) |
| Brushfield-Wyatt disease | A familial disorder characterised by unilateral nevus, contralateral hemiplegia, hemianopia, cerebral angioma, and mental retardation; possibly a variant of Sturge-Weber syndrome. Synonym: nevoid amentia. (05 Mar 2000) |
| Bruton's disease | <disease, immunology> An inherited disease due to agammaglobulinaemia caused by a deficiency in B lymphocyte function. Inheritance: sex-linked recessive. (18 Nov 1997) |
| Buerger's disease | <cardiology> A progressive occlusive disease of the arteries and veins. The cause of Buerger's disease is unknown. Smoking appears to accelerate the occlusive effects of Buerger's. (27 Sep 1997) |
| bulging eye disease | Infection of herbivores and rarely man with larvae of flies of the genus Gedoelstia, causing ophthalmomyiasis in humans. Synonym: bulging eye disease. (05 Mar 2000) |
| Burger-Grutz disease | An obsolete term for idiopathic hyperlipaemia. (05 Mar 2000) |
| Bury's disease | A chronic symmetrical eruption of flattened nodules, of a pinkish or purplish colour, occurring in plaques on the buttocks and extensors of wrists, elbows, and knees, becoming fibrotic and finally scarring; early lesions show necrotizing vasculitis with fibrinoid or lipid deposits in vessel walls. Synonym: Bury's disease. (05 Mar 2000) |
| Buschke's disease | A diffuse, non-pitting induration of the skin of unknown aetiology that occurs most commonly in association with diabetes mellitus, predominantly in females. It typically begins on the face or head and spreads to other areas of the body, sometimes involving noncutaneous tissues. Often it is preceded by any of various infections, notably staphylococcal infections. The condition resolves spontaneously, usually within two years of onset. (12 Dec 1998) |
| Busquet's disease | An osteoperiostitis of the metatarsal bones, leading to exostoses on the dorsum of the foot. (05 Mar 2000) |
| Buss disease | An acute, septic encephalomyelitis, pleuritis, and peritonitis of cattle caused by Chlamydia psittaci; it occurs in the north central United States. Synonym: Buss disease. (05 Mar 2000) |
| busse-buschke disease | <disease> An acute, subacute or chronic infection by the fungal organism, Cryptococcus neoformans. Infection generally causes a pulmonary infection but may also disseminate to the meninges. The pulmonary form is generally mild and transient (often unrecognised). With dissemination lesions may occur in the skeletal, cutaneus and visceral tissues. The most commonly recognised dissemination is to the central nervous system (meningitis). (27 Sep 1997) |
| Byler disease | Familial intrahepatic cholestasis, with early onset of loose, foul-smelling stools, jaundice, hepatosplenomegaly, and dwarfism, due to an error in conjugated bile salt metabolism; autosomal recessive inheritance. Origin: Byler, an Amish kindred (05 Mar 2000) |
| caffey disease | <radiology> Infantile cortical hyperostosis, aetiology unknown, onset before 5 months of age, hyperostosis and periosteal reaction, mandible (80-95%), clavicles, ribs, long bones (DIAPHYSES often asymmetric) Differential diagnosis: if metaphyses involved, consider battery (child abuse) (12 Dec 1998) |