polymorphous light eruption
(redirected from Sun allergy)pol·y·mor·phous light e·rup·tion
a common pruritic papular eruption appearing in a few hours and lasting up to several days on skin exposed to shortwave ultraviolet light (UVB); subepidermal edema and deep perivascular lymphocytic infiltration is seen microscopically.
Farlex Partner Medical Dictionary © Farlex 2012
pol·y·mor·phous light e·rup·tion
(pol'ē-mōr'fŭs līt ĕr-ŭp'shŭn)A common pruritic papular eruption appearing in a few hours and lasting up to several days on skin exposed to shortwave ultraviolet light; subepidermal edema and deep perivascular lymphocytic infiltration is seen microscopically.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
polymorphous light eruption
, polymorphic light eruption Abbreviation: PMLEA rash occurring after exposure to sunlight, typically consisting of papules, plaques, or papulovesicles on sun-exposed skin. It is more common in fair-skinned patients and in women than in men or people with darker skin color. The rash is usually itchy but may produce a burning or stinging sensation. Avoiding sun exposure with protective clothing and sunblock helps prevent PMLE. Immune-modulating drugs are available for refractory cases.
See also: eruption
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