Abstract—Diabetes Mellitus is causing a big socioeconomic burden in developing countries. Inadequate education and awareness about disease and its complication has further added to existing scenario particularly in India. Common clinical features of Diabetes Mellitus include polyuria, polydipsia and weight loss, nonhealing skin infection. Here we report an unusual case of Diabetes Mellitus presenting as acute retention of urine due to prostatic abscess, which completely recovered with conservative treatment, highlighting complete evaluation, early diagnosis, treatment and prevention of complications.