Fibromyalgia is a syndrome characterized by chronic, generalized pain in muscles and joints with the presence of characteristic, symmetrically occurring so-called tender points - areas of the body that are excessively sensitive to pressure. The condition is associated with a feeling of chronic fatigue, mood and sleep disturbances and a sensation of body stiffness. These complaints are bothersome and significantly impair patients' functioning in every aspect of their lives. There are few studies evaluating the functioning and disability of people with fibromyalgia. No such study has been conducted in Poland to date. Therefore, the purpose of this study is to evaluate the functioning and disability of fibromyalgia patients and the relationship of the level of disability with selected factors, such as pain intensity, emotional state, sleep quality, etc.