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 #Pruritus #primary #dermatology #Differential #Diagnosis #Algorithm #causes
