Single blinded randomized control study of low-reactive level laser therapy for overactive bladder

INTERVENTION: [Laser group] Irradiate the laser to the left and right of the third sacral hole (left: 5 minutes, right: 5 minutes). Twice a week, and 6 weeks. [Sham group] Pretends to irradiate the laser to the left and right of the third sacral hole (left: 5 minutes, right: 5 minutes). Twice a week, and 6 weeks. CONDITION: Overactive bladder PRIMARY OUTCOME: Change in urinary frequency from baseline SECONDARY OUTCOME: 1. Bladder diary (urination, urinary incontinence, urine volume, urinary urgency); 2. Urodynamic study; 3. IPSS; 4. King`s Health Questionnaire; 5. OABSS INCLUSION CRITERIA: 1. Urination frequency is 8 or more times per day on average 2. Falls under any of the following Urinary incontinence frequency is 1 or more times per day on average Urinary urgency frequency is 1 or more times per day on average 3. Inadequate or inappropriate effect of behavioral therapy or drug therapy 4. 20 years old and older at IC 5. Outpatient 6. Contraception possible