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
Recurrent balanoposthitis seen in : 
Select and explain. 
A. DM, B. Herpes simplex, C. Smoking, D. Alcohol
A: DM
Answer: A: DM 
Explanation: A i.e. Diabetes mellitus Atlas of Dermatology 2/e Vol I P-1492; Fitzpatrick's 6/e p-2164-2212; Rooks 7/e p.30.1-30.30, 25.20-39] - Inflamation of the glans penis is called Balanitis & that of mucousal surface of prepuce is called prosthitis. Inflamation of both prepuce & glans is called Balano prosthitis. Diabetes mellitusQ causes recurrent balanoprosthitisQ