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Enlarged Prostate Symptoms and Causes. In men, urine flows from the bladder through the urethra. BPH is a benign (noncancerous) enlargement of the prostate that blocks the flow of urine through the urethra. The prostate cells gradually multiply, creating an enlargement that puts pressure on the urethra -- the chute through which urine and semen exit the body.
Symptoms in men include. 1  Discharge from your penis. 2  A burning sensation when urinating. 3  Burning or itching around the opening of your penis. 4  Pain and swelling in one or both testicles (although this is less common)