Functional somatic syndrome

Functional somatic syndromes (or FSS) are groups of physical symptoms that occur together, with no known physical cause. The lack of a clear physical basis for the illness can lead to assumptions that it is a psychosomatic illness. The term "functional somatic syndromes" is sometimes used to refer to physical illnesses which are not fully understood, even when these illnesses are classified as specific diseases rather than as illnesses of unknown origin, for example chronic fatigue syndrome, fibromyalgia syndrome and irritable bowel syndrome may be referred to as "functional somatic syndromes" by proponents of the biopsychpdocial model of understanding illness.

Letters, articles and talks

 * 2000, Functional somatic syndromes
 * 2013, Disease-modifying therapies for nonrelapsing multiple sclerosis: Absence of evidence does not constitute evidence of absence