| erysipelotoxin | A toxin produced by types of Streptococcus pyogenes (group A haemolytic streptococci), the bacterial cause of erysipelas. (05 Mar 2000) |
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| erythema | <dermatology> A name applied to redness of the skin produced by congestion of the capillaries, which may result from a variety of causes, the aetiology or a specific type of lesion often being indicated by a modifying term. (18 Nov 1997) |
| erythema ab igne | A reticulated, pigmented, macular eruption that occurs, mostly on the shins, of bakers, stokers, and others exposed to radiant heat. Synonym: erythema ab igne, toasted shins. (05 Mar 2000) |
| erythema annulare | Rounded or ringed lesions. (05 Mar 2000) |
| erythema annulare centrifugum | A chronic recurring erythematous eruption consisting of small and large annular lesions, with a scant marginal scale, usually of unknown cause. Synonym: erythema figuratum perstans. (05 Mar 2000) |
| erythema annulare rheumaticum | A variant of erythema multiforme associated with rheumatic fever. (05 Mar 2000) |
| erythema arthriticum epidemicum | <microbiology> An infection by Streptobacillus moniliformis marked by initial chills and high fever (gradually subsiding), by arthritis usually in the larger joints and spine, and by a rash occurring chiefly over the joints and on the extensor surfaces of the extremities. Haverhill fever is used to indicate Streptobacillus moniliformis infections not associated with rat bite resulting from contaminated food or water. Synonym: erythema arthriticum epidemicum. Origin: Haverhill, MA, where an epidemic occurred in 1926 (05 Mar 2000) |
| erythema bullosum | Erythema multiforme with formation of large vesicles or bullae. (05 Mar 2000) |
| erythema caloricum | A reticulated, pigmented, macular eruption that occurs, mostly on the shins, of bakers, stokers, and others exposed to radiant heat. Synonym: erythema ab igne, toasted shins. (05 Mar 2000) |
| erythema chronicum migrans | The classic initial rash of Lyme disease. In the early phase of the illness, within hours to weeks of the tick bite, the local skin develops an expanding ring of unraised redness. There may be an outer ring of brighter redness and a central area of clearing. For more information, see LYME DISEASE. (12 Dec 1998) |
| erythema circinatum | Erythema multiforme in which the lesions are grouped in more or less circular fashion. (05 Mar 2000) |
| erythema dose | The minimum amount of X-rays or other form of radiation sufficient to produce erythema; historically, this dose was indicated by the Sabouraud meter as the B tint, the Holzknecht as 5(5H), the Hampson as 4, and the Kienbock as 10. (05 Mar 2000) |
| erythema dyschromicum perstans | Variously sized gray or red, slightly elevated macular lesions that tend to coalesce on the trunk, extremities, and face, commonly in dark-skinned Latin Americans; of unknown cause. Synonym: ashy dermatosis. (05 Mar 2000) |
| erythema elevatum diutinum | 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) |
| erythema exfoliativa | Familial continual skin peeling characterised by a separation of stratum corneum in leaflike flakes occurring everywhere except on the palms and soles; the cause is unknown. Synonym: erythema exfoliativa, erythroderma exfoliativa. (05 Mar 2000) |