What is one of the signs of a urinary tract infection?

The presence of dark or cloudy urine is indeed a common sign of a urinary tract infection (UTI). This change in urine appearance occurs due to the presence of bacteria, blood, or pus that can contaminate the urine during an infection. UTIs often involve an inflammatory response, which can lead to these changes in urine texture and color. Other symptoms commonly associated with UTIs may include a strong urge to urinate, burning sensations during urination, and increased frequency of urination.

The other choices do not typically correlate with a urinary tract infection. Increased appetite, for example, is not a recognized symptom of a UTI and may relate to other health conditions. Chronic constipation is also not indicative of a urinary tract infection, as it primarily concerns bowel regularity rather than urinary function. Blotchy and red skin could be related to allergic reactions or skin conditions rather than a UTI. Therefore, recognizing dark or cloudy urine as a sign helps in the early identification and treatment of urinary tract infections.