urticaria(redirected from urticaria pigmentosa)
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Related to urticaria pigmentosa: Systemic mastocytosis
[New Latin urticāria, from Latin urtica, nettle.]
(Pathology) a skin condition characterized by the formation of itchy red or whitish raised patches, usually caused by an allergy. Nontechnical names: hives or nettle rash
[C18: from New Latin, from Latin urtīca nettle]
ˌurtiˈcarial, ˌurtiˈcarious adj
n. (used with a sing. or pl. v.)
a transient eruption of large, itchy wheals on the skin usu. caused by an allergic reaction; urticaria.
[1490–1500; orig. Scots; of obscure orig.]
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|Noun||1.||urticaria - an itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs|
hypersensitivity reaction - an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock