PROBLEM TO BE SOLVED: To provide a new material for a method of improvement and/or treatment of dysuria without accompanying pain or invasion in the treatment or without side effects of medicines.SOLUTION: It is newly discovered that the laser irradiation is applicable to the improvement and/or treatment of the dysuria such as an abnormal urge to urinate, frequent micturition, incontinence, pains in the bladder-pelvis and detrusor overactivity (especially the disability in urine collection). Further, an optimum laser condition to be used for improvement/treatment of the dysuria is discovered.COPYRIGHT: (C)2009,JPO&INPIT【課題】治療に痛み・侵襲を伴わず、さらに薬の副作用等がない新たな排尿障害の改善及び/又は治療方法に関する材料を提供すること。【解決手段】レーザー照射が、尿意の異常、頻尿、尿失禁、膀胱・骨盤部痛、排尿筋過活動などの排尿障害(特に、蓄尿障害)の改善及び/又は治療に適用できることを新たに見出した。さらに、排尿障害の改善及び/又は治療に用いる最適なレーザーの条件を見出した。【選択図】なし