Which symptom is commonly associated with a urinary tract infection (UTI)?

Pain during urination, known medically as dysuria, is a hallmark symptom commonly associated with urinary tract infections (UTIs). When bacteria infect the urinary tract, inflammation occurs, leading to irritation and discomfort during urination. This symptom arises from the body's response to the presence of pathogens and the resulting inflammation in the bladder and urethra.

The other symptoms listed do not typically relate to a UTI. Increased appetite and weight loss can be associated with various other health conditions but are not characteristic of urinary infections. Similarly, a skin rash is generally not linked with UTIs, as it pertains to skin conditions or allergic reactions rather than urinary system issues. Therefore, pain during urination stands out as the primary symptom linked to UTIs, encompassing the specific experience of discomfort that patients report.