[Integrative medicine, naturopathic and complementary medicine in the treatment of fibromyalgia syndrome : An overview against the background of clinical experiences from routine treatment].

Fibromyalgia syndrome is classified as a functional somatic syndrome. There are typical but not clearly defined symptom clusters, such as chronic widespread pain, non-restorative sleep, and a tendency to physical and/or mental exhaustion. The core principle of treatment in the S3 guidelines is a multimodal treatment, especially for severe forms of the disease.