Prostate problems, such as an enlarged prostate, prostate cancer and prostatitis, can cause frequent urination in men, according to WebMD. Additionally, both types of diabetes, interstitial cystitis, bladder cancer and stroke can cause the condition.
Some prostate problems can cause the prostate to swell, which can press against the urethra and block the flow of urine, states WebMD. This causes the bladder to become irritable and contract even when it contains very little urine. In people with diabetes, frequent urination stems from the body's attempt to rid itself of excess glucose through the urine. Finally, interstitial cystitis is a chronic condition that causes people to experience pressure or pain around the bladder and pelvic area, according to Mayo Clinic.
Frequent urination is a common effect of taking diuretics, as these medications prompt the body to get rid of extra fluid through the urine, explains WebMD. Stroke sufferers and patients with neurological conditions experience frequent urination resulting from damage to nerves connected to the bladder. Radiation therapy, bladder dysfunction and bladder cancer are rare causes of frequent urination.