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Urticaria Mechanica

definition

This variant of urticaria presents with erythematous, oedematous lesions at pressure sites. The lesions may not resemble typical wheals. They are painful and deep and occur particularly on the feet after walking, and on the buttocks after sitting. In delayed pressure urticaria the lesions do not occur until several hours after the pressure has been applied.

synonyms

Urticaria Mechanica, Pressure Urticaria

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