How to distinguish between prostatitis and sexually transmitted diseases?

Patient's question:

Before sexual activity, there was a recurrence of a significant amount of prostatic fluid when the penis was not yet erect. Previously, it was only after erection that a small amount would seep out, and it wasn't this much. For a month, the examination and test results were: no previous treatment history and effectiveness: no matter what help was sought: doubts

Doctor's answer:

Hello. Based on your symptoms, it should be considered as chronic prostatitis. For sexually transmitted diseases, it generally involves symptoms such as dysuria and urethral discharge.
Suggestions: You need to have a urinalysis, prostatic fluid analysis, and bacterial culture to confirm the diagnosis of prostatitis. This will also help determine the type of prostatitis, allowing for targeted medication.
Since patients are directly affected by prostatitis, we should promptly implement symptomatic treatment principles and avoid delaying medical consultation. If prostatitis does not improve with treatment, it is important to promptly adjust the treatment plan.