Bladder Infection (Urinary Tract Infection—UTI) in Adults

A bladder infection is an illness most often caused by bacteria that enter your bladder and multiply. Bladder infections are the most common type of urinary tract infection. If untreated, a bladder infection can develop into a kidney infection.

Symptoms of a bladder infection may include burning during urination; frequent urges to urinate; pain or discomfort in the lower abdomen; and cloudy, bloody, or strong-smelling urine. Bacteria are the most common cause of a bladder infection.

Health care professionals use your medical history, a physical exam, and lab tests to diagnose a bladder infection. Your health care professional may also order other tests to help diagnose or find the cause of a bladder infection.

Bladder infections are most often treated with antibiotics. Drinking more liquids can speed recovery and ease symptoms. Help prevent bladder infections by keeping your urinary tract healthy and wearing loose-fitting clothing.

Researchers have not found that diet plays a role in treating bladder infections. Drinking lots of liquids may help prevent bladder infections. Water is best.

NIDDK conducts and supports clinical trials in many diseases and conditions, including urologic diseases. The trials look to find new ways to prevent, detect, or treat disease and improve quality of life.