Condition
Bladder infection (UTI) in adults
Also known as: UTI, cystitis, urinary tract infection
A bladder infection is a common urinary tract infection. Many are uncomplicated, but symptoms should be assessed because some infections need prompt treatment or point to another problem.
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- Urology Hospitals Editorial Team
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Independent clinical review pending. This page is written by our editorial team from the cited authoritative sources and has not yet been checked by an independent qualified clinician. Always discuss your situation with your own healthcare professional.
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Overview
A bladder infection occurs when bacteria affect the bladder lining. Many are uncomplicated, but symptoms overlap with other conditions, so assessment matters.
Symptoms
Common symptoms include burning on urination, urinary frequency and urgency, cloudy or strong-smelling urine, and lower abdominal discomfort. Symptoms can differ in older adults.
How it is diagnosed
A clinician reviews symptoms and often requests a urinalysis, sometimes with a urine culture to identify bacteria and guide antibiotic choice.
Treatment options
Treatment is individualized and may involve antibiotics, fluids, and symptom relief. Do not start or stop antibiotics without professional advice, and complete any course as directed.
Questions to ask a clinician
Related topics
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Sources
Bladder Infection (Urinary Tract Infection—UTI) in Adults(opens in a new tab)
National Institute of Diabetes and Digestive and Kidney Diseases · Accessed Jul 18, 2026