Urinary tract infections (UTIs) are bacterial infections affecting parts of the urinary tract, classified as simple cystitis when impacting the lower tract and pyelonephritis for the upper tract. Commonly affecting older adults, particularly females due to anatomical differences, UTIs can be categorized by location, complications, and history, with Escherichia coli being the primary causative agent. Management involves medical treatment with antibiotics and nursing interventions aimed at symptom relief and patient education on preventive measures.