What is a Urinary Tract Infection (UTI)?

• A. Infection of the urinary tract
• B. Inflammation of the urethra
• C. Kidney stones
• D. Prostate enlargement

Answer: (A)

A urinary tract infection is an infection of any part of the urinary tract by microorganisms. Most commonly, bacteria from the bowel, especially Escherichia coli, enter the urinary tract and cause infection. UTIs can involve the bladder (cystitis), the urethra (urethritis), or the kidneys (pyelonephritis). This differs from urethritis, which is inflammation of the urethra alone and may not reflect a tract-wide infection; kidney stones and prostate enlargement are not infections themselves but conditions that can affect urine flow or predispose to infection. Recognizing symptoms like painful urination, frequent urge to urinate, and possibly fever helps guide diagnosis, with urinalysis and culture confirming the infection.