Benign Enlargement of Prostate is the commonest cause of urinary symptoms, also known as LUTS (Lower Urinary Tract Symptoms) that occur after the age of 50. In such a case, the prostate gland enlarges and encircles the bladder neck. Since it involves the urethra, the increase in size can directly block urine passage.
Microsopic BPH is present in 10% of all men at age of 40, rising to 90% at age of 80 years. It is not true that BPH equals LUTS. Bladder problems contribute mainly to LUTS in old men. Moderate to severe LUTS with accompanying impairment of quality of life is significant problem in around 50% of men. Most men with BPH and mild LUTS do not suffer any complication related to their condition.