Reactive Skin Rash - Differential Diagnosis Algorithm Reactive erythematous with various morphology • Urticaria - Firm / edematous papules & plaques that are transient & itchy. Usually lasts <24hrs • Erythema Nodosum - Tender or painful red nodules on shins • Erythema Multiforme - Target lesions possibly with macules, papules, vesicles &/or bullae on palms soles and mucous membranes #Reactive #SkinRash #dermatology #Differential #Diagnosis #Algorithm #causes
