serum rash


se·rum rash

a cutaneous manifestation of serum sickness.

serum rash

A pruritic hivelike rash (urticaria or angioedema) or a vasculitis (palpable purpura) that accompanies serum sickness, usually caused by a hypersensitivity reaction to drugs or immune globulins obtained from animals. Malaise, joint pains, fevers, and other symptoms may accompany the rash. See: serum sicknessSee also: rash