Not a direct somatoform disorder?

Ans. is A Somatization Chronic fatigue syndrome and irritable bowel syndrome are included in functional somatic disorders. Fibromyalgia While there is no known cause for fibromyalgia, recent research has revealed some new facts about the disease. One of the new discoveries is that people with fibromyalgia process pain differently. The level of chemical in the cerebrospinal fluid (CSF) called substance P, which transmits pain impulses to the brain, is three times higher in people with the disease than in the those who do not have the condition. This likely causes someone with fibromyalgia to experience pain more intensely. Chronic fatigue syndrome Chronic fatigue syndrome (also called CFS) - is a disorder without a known cause, although CFS may be related to a previous infection. CFS is a state of chronic fatigue that exists without other explanation for six months or more and is accompanied by cognitive difficulties (problems with short-term memory or concentration). Irritable bowel syndrome Irritable bowel syndrome (IBS) is a chronic gastrointestinal disorder of unknown cause. Common symptoms include abdominal cramping or pain, bloating and gassiness, and altered bowel habits.