


UTIs typically occur when bacteria enter the urinary tract through the urethra and begin to spread in the bladder. The urinary system is designed to keep out bacteria but the defenses sometimes fail and bacteria may take hold and grow into a full-blown infection in the urinary tract. Most common UTIs occur mainly in women and affect the bladder and urethra. When treated properly, lower urinary tract infections rarely lead to complications. But left untreated, UTIs can cause serious challenges