Urine Infection In Men

Authored by , Reviewed by Dr Laurence Knott | Last edited | Certified by The Information Standard

Most urine infections are caused by germs (bacteria) which come from your own bowel. They cause no harm in your bowel but can cause infection if they get into other parts of your body. Some bacteria lie around your back passage (anus) after you pass a stool (faeces). These bacteria sometimes travel to the tube which passes urine from your bladder (the urethra) and into your bladder. Some bacteria thrive in urine and multiply quickly to cause infection.

A urine infection is often called a urinary tract infection (UTI) by doctors. When the infection is just in the bladder and urethra, this is called a lower UTI. If it travels up to affect one or both kidneys as well then it is called an upper UTI. This can be more serious than lower UTIs, as the kidneys can become damaged by the infection.

Male genitals and urinary tract


Urine infections are rare in men aged under 50. They become more common in older men. Urine infection is much more common in women.

In some cases an underlying problem can increase the risk of developing a urine infection. These include the following:

In other cases the infection occurs for no apparent reason. There is no problem with the bladder, kidney, prostate, or defence (immune) system that can be identified.

  • Infection in the bladder (cystitis) usually causes pain when you pass urine, and you pass urine more frequently. You may also have pain in your lower tummy (abdomen). Your urine may become cloudy, bloody or smelly. You may have a high temperature (fever).
  • Infection in the kidneys may cause pain in a loin (the side of the abdomen over your kidney) and a high temperature (fever). It may cause you to feel sick or be sick (vomit). You may feel generally unwell.

In some elderly men, the only symptoms may be a recent onset of confusion or just feeling generally unwell, even without any actual urinary symptoms.

A urine sample can confirm the diagnosis and identify the germ (bacterium) causing the infection. Further tests are not usually necessary if you are otherwise well and have a one-off infection. However, your doctor may advise tests of your kidney, prostate, or bladder if an underlying problem is suspected.

An underlying problem is more likely if the infection does not clear with an antibiotic medicine, or if you have:

  • Symptoms that suggest a kidney is infected (and not just the bladder).
  • Recurring urine infections. For example, two or more in a three-month period.
  • Had problems with your kidney in the past, such as kidney stones or a damaged kidney.
  • Symptoms that suggest an obstruction to the flow of urine.
  • Blood-stained urine which persists after treatment with antibiotics.

Tests may include:

  • A course of an antibiotic medicine will usually clear the infection quickly. This is usually for seven days. You should see a doctor if your symptoms are not gone, or nearly gone, after a few days.
  • Paracetamol or ibuprofen will usually ease any pain, discomfort, or high temperature (fever).
  • Have plenty to drink to help prevent a lack of fluid in the body (dehydration) if you have a fever and feel unwell.

The vast majority of men improve within a few days of starting treatment. See a doctor if you do not quickly improve. If your symptoms do not improve despite taking an antibiotic medicine then you may need an alternative antibiotic. This is because some germs (bacteria) are resistant to some types of antibiotics. This can be identified from tests done on your urine sample.

Occasionally the infection may spread and cause you to be more unwell. Infection in the bladder (cystitis) may spread to the kidney (pyelonephritis). Infection may also spread to involve the prostate gland, causing infection of the prostate gland (prostatitis). Occasionally it may lead to a swelling caused by a collection of pus (abscess) in the prostate gland.

Further reading and references

  • ; Scottish Intercollegiate Guidelines Network - SIGN (updated July 2012)

  • ; European Association of Urology (2015)

  • ; NICE CKS, October 2014 (UK access only)

i have had chronic utis for two years now. I have gone to a urologist and they gave me on hand medication... sounds wonderful HOWEVER as soon as i take it i get itchy. especially down there. for how...

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