This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
Keratoderma is/are seen in 
Select and explain. 
A. Pemphigus, B. Pityriasis rosea, C. Pityriasis rubra pilaris, D. Dermatitis herpetiformis
C: Pityriasis rubra pilaris
Answer: C: Pityriasis rubra pilaris 
Explanation: C i.e. Pityriasis rubra pilaris Keratoderma is seen in PRP, psoriasis, Reiter's syndrome (keratoderma blenorrhagica), arsenic and Haxthausen's disease.