Urinary Tract Infections
A urinary tract infection (UTI) is an infection in any part of the urinary system, most often the bladder or urethra. It is usually caused by bacteria and can lead to pain or burning when passing urine and a frequent need to go. Most UTIs are easily treated, but some need prompt medical care.
Overview
What are urinary tract infections?
A urinary tract infection is an infection affecting part of the urinary system, which includes the kidneys, the tubes that carry urine, the bladder and the urethra. Most infections affect the lower tract, especially the bladder. They usually occur when bacteria enter the urinary tract and multiply, leading to irritation and the typical symptoms of a UTI.
How common are urinary tract infections and who do they affect?
Urinary tract infections are among the most common infections, affecting people of all ages. They are much more frequent in women than in men, partly because of differences in anatomy. Some people experience them only rarely, while others have repeated infections. They can also affect children and older adults, sometimes with less typical symptoms.
Symptoms and Causes
What are the symptoms of urinary tract infections?
Common symptoms include a burning feeling when passing urine, needing to urinate more often or urgently, and passing only small amounts. Urine may look cloudy or strong-smelling, and there may be pain in the lower abdomen. If the infection reaches the kidneys, it can cause fever, back pain and feeling generally unwell, which needs prompt attention.
What causes urinary tract infections and who is at risk?
Most UTIs are caused by bacteria entering the urinary tract, often from the bowel. Risk factors include being female, sexual activity, pregnancy, menopause, urinary catheters, and conditions that block or slow the flow of urine. Diabetes and a weakened immune system can also increase the likelihood. Not drinking enough fluid may contribute as well.
Diagnosis and Tests
How are urinary tract infections diagnosed?
A doctor often diagnoses a UTI based on symptoms and a simple urine test that checks for signs of infection. A urine sample may be sent to a laboratory to identify the bacteria involved, which can guide treatment, especially for repeated or complicated infections. Further tests or imaging may be arranged if infections keep coming back or affect the kidneys.
Management and Treatment
How are urinary tract infections treated or managed?
Many urinary tract infections are treated with a course of medication prescribed by a doctor, alongside drinking plenty of fluids and pain relief if needed. Simple bladder infections often clear quickly, while infections involving the kidneys may need more intensive care. For people with frequent UTIs, a doctor may suggest steps to reduce how often they return.
Prevention
Can urinary tract infections be prevented or their risk reduced?
The risk of urinary tract infections may be reduced by drinking enough fluids, not delaying urination, and wiping from front to back. Emptying the bladder after sexual activity and good general hygiene can help. For people with recurrent infections, a doctor may recommend additional measures. Managing conditions such as diabetes also supports a healthier urinary tract.
Additional Common Questions
When should I see a doctor about a UTI?
See a doctor if symptoms are severe or do not improve, if you have a fever, back pain, or blood in your urine, or if you are pregnant. Babies, older adults, and people with other health conditions should seek advice early.
Can a UTI go away on its own?
Some mild bladder infections may settle with rest and plenty of fluids, but many need treatment to clear fully and to prevent the infection from spreading. It is best to check with a doctor rather than wait.
Why do urinary tract infections keep coming back?
Recurrent UTIs can happen for several reasons, including anatomy, hormonal changes, or factors that affect urine flow. If infections return often, a doctor can investigate the cause and suggest ways to reduce them.
Sources
This health topic is for general information and is not a substitute for professional medical advice. Always consult a qualified clinician about your individual situation. See our medical disclaimer.