This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urethra and penis, Subject name: Surgery
Acute urinary retention in a male child may be due to: 
Select and explain. 
A. Prostatic radiotherapy, B. Urethral stricture, C. Hysteria, D. Meatal ulcer with scabbing
D: Meatal ulcer with scabbing
Answer: D: Meatal ulcer with scabbing 
Explanation: Acute urinary retention in a male child may be due to local inflammatory causes like meatal ulcer with scabbing. Etiology of urinary retention in children Neurological processes (17%) Severe voiding dysfunction (15%) UTI (13%) Constipation (13%) Adverse drug effect (13%) Local inflammatory causes (7%) Locally invading neoplasms (6%) Benign obstructing lesions (6%) Idiopathic (6%) Combined UTI and constipation (2%) Incarcerated inguinal hernia (2%)