Lower urinary tract symptoms (LUTS) refer to a group of clinical symptoms involving the bladder, urinary sphincter, urethra, and, in men, the prostate. Although LUTS is a preferred term for prostatism, and it is more common for the term to be applied to men; lower urinary tract symptoms also affect women. LUTS affect approximately 40% of older men. Lower urinary tract symptoms (LUTS) refer to a group of clinical symptoms involving the bladder, urinary sphincter, urethra, and, in men, the prostate. Although LUTS is a preferred term for prostatism, and it is more common for the term to be applied to men; lower urinary tract symptoms also affect women. LUTS affect approximately 40% of older men.