Erythema
Erythema: Redness of the skin that results from capillary congestion. Erythema can occur with inflammation, as in sunburn and allergic reactions to drugs.
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- Erythema chronicum migrans
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 […]
- Erythema dose
Erythema dose: The amount of radiation which, applied to the skin, makes it turn temporarily red (erythematous).
- Erythema infectiosum
Erythema infectiosum: A sometimes-used Latin name for fifth disease. See Fifth disease.
- Erythema nodosum
An inflammatory reaction that occurs deep in the skin and is characterized by the presence of tender, red, raised lumps or nodules that range in size from 1 to 5 centimeters and are most commonly located over the shins but occasionally on the arms or other areas. The causes of erythema nodosum include medications (such […]
- Erythrasma
Erythrasma: A chronic superficial slowly spreading skin infection, especially in the folds of the body and webs between the toes, caused by a bacterium called Corynebacterium minutissimum. Erythrasma most often affects adults, especially those with diabetes, and people in the tropics. Erythrasma looks like a chronic fungal infection. Scaling, cracks, and slight maceration (softening) typically […]