Pruritus - Primary Skin Lesion - Differential Diagnosis Algorithm

Macules / Papules / Plaques:

 • Xerosis (dry skin)

 • Atopic dermatitis

 • Nummular dermatitis

 • Seborrheic dermatitis

 • Stasis dermatitis

 • Psoriasis

 • Lichen Planus

 • Infestations (scabies, lice)

 • Arthropod bites

Vesicles/Bullae:

 • Varicella zoster (chickenpox)

 • Dermatitis herpetiformis

 • Bullous pemphigoid

Wheals/Hives:

 • Urticaria



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