There are many causes of pain after urination in men that aren't related to sexually transmitted diseases. Here are just a few of them.
- Kidney stones. Originating in the kidney when it is isn't able to flush all of the mineral content of the urine out of your body, kidney stones can cause intense pain after urination when they are stuck either in the bladder (which collects urine) or the urethra (the tube that conducts urine to your penis). Most men who have had kidney stones say they are the worst pain they have ever experienced in their lives. About 15 percent of men develop kidney stones at some point in their lives.
- Obstructive uropathy. Sometimes urine flows backward to the kidney due to an obstruction in the ureter, the tube that carries urine from the kidney to the bladder. This condition can be caused by kidney stones, blood clots, tumors, digestive diseases, and, rarely, cancer.
- Urethral stricture. Sometimes the urethra, the tube that carries urine from the bladder to the penis, is partially blocked after injury. This condition is not rare in men who do a lot of bicycling, and can also occur after getting hit in the scrotum or having a catheter put in. When this is the problem there is usually also abdominal pain.
- Urinary tract infection, also known as UTI. Urinary tract infections can occur anywhere in the urinary tract, including the kidneys, the bladder, the ureters, or the urethra. They are usually caused by bacteria, although they can also be caused by fungi and viruses. When the infection enters the kidneys (pyelonephritis), it can be life threatening. UTIs tend to persist indefinitely without treatment, and the bacteria that cause them tend to hide in the bowel between outbreaks of the UTI. Making sure penis and bowel contents don't come in contact makes it easier to avoid fewer flareups of the UTI.
- Prostatitis. Inflammation in the prostate gland can lead to intense pain after urination. In younger men, prostate infections tend to be caused by STDs, but in older men prostate infections tend to be caused by E. coli. By age 60, most men have an enlarged prostate, which may interfere with normal urination.
- Bladder neck obstruction. Sometimes the tip of the bladder is blocked by an enlarged prostate. This is also a problem that is more common in older men.
- Bladder cancer causes painful urination, but it is also accompanied by weight loss, frequent urination, and lower back pain.
- Spermicides cause urethral irritation in men.
- A man can pick up a bladder infection from vaginal or anal intercourse with an infected partner. It is possible to acquire a bladder infection during anal intercourse with either a man or a woman. The bowel harbors bacteria that cause UTIs.
- Unprotected vaginal intercourse with a woman who has passed menopause is more likely to cause an bladder or urinary tract infection than unprotected vaginal intercourse with a woman who has not yet become menopausal. This is due to changes in the kinds of bacteria present in the woman's vagina.
- Wiping from back to front after a bowel movement increases the chances of getting a UTI. The bacteria can be transferred from underwear to the tip of the penis.
- Latex condoms cause UTIs in some men.
- Prolonged use of bladder catheters increases the risk of UTI. Reinserting a contaminated catheter astronomically increases the risk of infection. These infections can be fatal in older men.
- Diabetes makes men more susceptible to UTIs, especially if they let their blood sugar levels go over 250 mg/dl (about 20 mmol/L). High blood sugar levels result in sugar in the urine, which feeds disease-causing bacteria.
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