Diuretic-Induced Renal Colic

Abstract

To the Editor.— Two articles report 1,2 water- and beer-induced diuresis precipitating attacks of renal colic in patients with intermittent hydronephrosis. Here is an account of renal colic resulting from drug-induced diuresis. This response led to the discovery of previously asymptomatic partial urinary tract obstruction. Report of a Case.— A 43-year-old white woman with a uterine fibroid known since the age of 38, at an annual examination in 1972 complained of premenstrual edema with a weight gain of five pounds, tenderness of the breasts, and general body heaviness. No abdominal, back, or flank complaints appeared, nor had they on previous examinations dating back to 1960. Menstrual cycles were normal and not prolonged. A large irregular uterus extended into the right lower quadrant of the abdomen. A combination of 50 mg of triamterene (Dyrenium) and 25 mg of hydrochlorothiazide was prescribed every other morning beginning ten days before each period, as