<prompt> Erythroderma is seen in all except -Drug hypersensitivityPityriasis rubra pilarisPityriasis roseaPsoriasis  <response>: Ans. is c i.e., pityriasis rosea Causes of Erythroderma1 Skin disorders - Psoriasis, eczemadermatitis atopic, stasis,contact, seborrheic, Pityriasis Rubra Pilaris, Lichen Planus2 Systemic diseases - cutaneous T- cell lymphoma3 Drugs - Gold, allopurinol, phenytoin, penicillin, sulphonamide4 Idiopathic - secondary to solid tumors of lung, liver, prostate, thyroid, colon 