The aim of this study was to evaluate clinical and urodynamic observations on women with fibromyalgia (FM) and lower urinary tract symptoms (LUTS). Fifty-one patients with FM and LUTS and 50 patients with LUTS without FM answered questions about urinary symptoms and also two questionnaires about quality of life measures: "Medical Outcomes Study 36-Item Short-Form Health Survey" and "King's Health Questionnaire". The urodynamic parameters evaluated were the following: maximum cystometric capacity, urine loss due to cough, Valsalva leak point pressure, and detrusor overactivity (DO). The groups were homogeneous concerning age, parity, body mass index, and genital prolapse. Symptoms such as increase of urinary frequency (p=0.007) and urge urinary incontinence (p=0.004) were statistically more common in the FM group. DO was the statistically most common urodynamic observation in patients with FM (p=0.02). Regarding the questionnaires about quality of life, the patients with fibromyalgia and LUTS had the worst results in all fields. In conclusion, patients with FM and LUTS have detrusor overactivity more often as well as an increase of urinary frequency, contributing to the quality of life worsening.