Psoriasis must be differentiated from other<unk>  that cause an erythematous, scaly rash such as cutaneous T cell lymphoma/mycosis fungoides, pityriasis rosea, pityriasis rubra pilaris, pityriasis lichenoides chronica, nummular dermatitis, secondary syphilis, Bowen’s<unk>  exanthematous pustulosis, hypertrophic lichen planus, Sneddon–Wilkinson<unk>  small plaque parapsoriasis, intertrigo, Langerhans cell histiocytosis, dyshidrotic dermatitis, tinea manuum/pedum/capitis, and seborrheic dermatitis.
Differentiating psoriasis from other diseases
Differentiating Scleroderma from other diseases
Alopecia pathophysiology
Skin cancer pathophysiology
Squamous cell carcinoma of the skin pathophysiology
Differentiating erysipelas from other diseases
Psoriasis pathophysiology
Dermatophytosis pathophysiology