An Efficacy Trial of Electroacupuncture at Points of Bilateral BL33 for Mild and Moderate Benign Prostatic Hyperplasia

Inclusion Criteria: * 50-70 years old * Mild to moderate BPH evaluated by I-PSS * Patients having urinary dysfunction more than 3 months * Patients with stable life signs * no use of α1 receptor blocker, 5α-reductase inhibitor or traditional Chinese medicine for over 1 week * Volunteer to join this research and sign the written informed consent prior to receiving treatment Exclusion Criteria: * Urinary dysfunction caused by gonorrhea or urinary tract infection * Oliguria and anuria caused by urinary calculi, prostate cancer, bladder tumor and acute/chronic renal failure * Urinary dysfunction caused by neurogenic bladder, bladder neck fibrotic and urethral stricture * Failure of invasive therapy for prostatic obstruction * Injured local organs, muscle and nerve caused by pelvic operation or historical trauma * Upper urinary obstruction and hydrocele combined with damaged renal function due to BPH diagnosed by B-ultrasound * Patients who can't stick to treatment because of economic reason, far distance between home and the hospital or difficult walking etc.