According to the National Kidney and Urological Disease Information Clearinghouse, enlarged prostate (benign prostatic hypertrophy, or BPH) is the most common prostate problem among men over age 50.

When the prostate is enlarged, it interferes with the flow of urine through the urethra. This causes the urethra to narrow, forcing the bladder to contract more forcefully to expel urine. Over time, the bladder will become stronger and thicker, but also more sensitive.

MedlinePlus experts say less than half of men will have urinary symptoms from BPH. Here are seven urinary symptoms that some men with BPH do experience.