Which symptom pair is typically associated with benign prostatic hyperplasia?

• A. Nocturia and daytime frequency
• B. Hematuria and flank pain
• C. Polyuria and polydipsia
• D. Diarrhea and constipation

Answer: (A)

Benign prostatic hyperplasia commonly causes lower urinary tract symptoms from bladder outlet obstruction as the prostate enlarges around the urethra. This leads to irritative and obstructive voiding symptoms, with frequent trips to the bathroom both during the day and at night. The combination of nocturia and daytime frequency best fits this pattern, reflecting how the bladder responds to partial obstruction by the enlarged prostate.

The other symptom pairs don’t align with BPH: hematuria with flank pain suggests stones or renal/urothelial pathology; polyuria with polydipsia points to diabetes mellitus; diarrhea with constipation involves gastrointestinal symptoms rather than urinary obstruction.