Fibromyalgia (FM) is a common form of chronic pain that causes pain all over the body. It is thought to affect between 1% and 5% of the world's people. It happens more often in adults, but it can also happen in children. Its exact cause and effect are still not known. However, it is thought to be linked to neuronal over-sensitization, decreased conditioned pain modulation (CPM), cognitive dysfunction, dementia, and problems with how the brain processes information. It is now a disorder with physical symptoms (SSD). FM does not run in families. But it seems to happen more often in families where FM has happened before. One of the most common reasons why people get fibromyalgia is an SNP in the serotonin transporter gene, which can also cause emotional stress. The effects of genetic polymorphisms on serotonergic and catecholaminergic processes in the central nervous system seem to make fibromyalgia more likely. It can be stopped if it is found and treated quickly. Physical therapy and other treatments that don't involve drugs should be made to fit the person with FM. The Food and Drug Administration (FDA) has given the go-ahead for three treatments. In this review article, we looked again at the possible causes, effects, and treatments for fibromyalgia syndrome.