What disease causes pain during urination and pus discharge in men?

Male dysuria with purulent discharge may be a symptom of various diseases, mainly including: 1. Chronic bacterial prostatitis: Inflammation caused by bacterial infection, which may lead to symptoms such as frequent urination, urgency, dysuria, and white discharge after urination. 2. Urethritis: Inflammation of the urethra caused by gonococcus or non-gonococcal pathogens, characterized by urethral itching, frequent urination, dysuria, and urethral discharge. 3. Balanoposthitis: Inflammation caused by infections such as bacteria or candida, which may be accompanied by white, viscous discharge from the glans penis and dysuria. The appearance of these symptoms may require timely medical attention to determine the specific cause through examination and to receive targeted treatment. Meanwhile, maintaining good living habits and hygiene practices are also important measures for preventing these diseases.