There are several reasons for urinary weakness.

Urinary weakness more common reasons are as follows: First, prostate hyperplasia, patients due to hyperplasia of the prostate pressure urethra, so that urethral narrowing. In the early stage of the disease bladder detrusor muscle can compensate contraction to promote urination, the disease gradually develops will cause bladder detrusor muscle contraction weakness, so the performance of urinary weakness, patients urinate when the urine range is relatively short. Second, neurogenic bladder neurogenic bladder, due to neuropathy caused by bladder contraction weakness, will also be manifested as urinary weakness.