The age of onset of UTI in women is about 25-40 years old, which means that young women are more likely to suffer from UTIs. The majority of UTIs are caused by unclean sexual contact, resulting in frequent urination, urgency, and frequent urination. Young women are more active and more likely to have UTIs. Older women are prone to bladder infections because the mucous membrane atrophies and resistance decreases after the hormone level decreases, but urethritis rarely occurs. Young women have frequent sexual activity or unprotected sexual activity, resulting in gonococcal infection, mycoplasma infection, chlamydia infection, and even syphilis spirochete or some fungal infections, resulting in frequent, urgent, and painful urination, accompanied by a large amount of discharge in the urethra or burning and itching in the urethra. You need to go to the hospital for relevant tests, such as bacterial culture, mycoplasma chlamydia culture test, etc. to further clarify the pathogenic bacteria, targeted treatment.