Urticaria Differential Diagnosis

Differential Diagnosis

The following should be ruled out before diagnosing urticaria:

• Urticaria pigmentosa
• Urticarial vasculitis
• Bradykinin-mediated angioedema
• Exercise-induced anaphylaxis
• Cryopyrin-associated periodic syndromes
• Schnitzler's syndrome
• Well's syndrome
• Bullous pemphigoid (prebullous stage)
• Mast cell activation syndrome
• Adult-onset Still's disease
• Atopic or contact dermatitis
• Erythema multiforme, marginatum or infectiosum
• Viral exanthema
• Multiple insect bites
• Drug eruption
• Henoch-Schonlein purpura
• Pityriasis rosacea
• Gleich syndrome