Which condition is suspected given fever, abdominal pain, and urinary frequency?

• A. Bladder infection
• B. Kidney stones
• C. Appendicitis
• D. Pelvic inflammatory disease

Answer: (A)

A bladder infection is the best match here. When the bladder is inflamed by bacteria, you often notice urinary frequency and a sense of urgency, sometimes with abdominal or suprapubic discomfort. Fever can occur with urinary tract infections as they progress or in more widespread infections, but the hallmark in this scenario is the urge to urinate frequently.

The other conditions don’t fit as well with this symptom pattern. Kidney stones usually cause sudden, severe flank or groin pain that can be colicky and may include blood in the urine, not primarily urinary frequency. Appendicitis typically starts as pain near the belly button that moves to the lower right abdomen, with loss of appetite and sometimes fever—urinary frequency isn’t the defining feature. Pelvic inflammatory disease presents with lower abdominal pain and vaginal symptoms such as discharge or cervical motion tenderness rather than the main sign being urinary frequency.

So the combination of fever, abdominal pain, and especially urinary frequency points toward a bladder infection.