The role of depression in pain, psychophysiological syndromes and medically unexplained symptoms associated with chronic fatigue syndrome.
BACKGROUND
The association between depression and pain, function, medically unexplained symptoms and psychophysiological syndromes such as irritable bowel syndrome has not been explored before in chronic fatigue syndrome.


METHODS
Cross-sectional controlled study of the current prevalence of psychophysiological syndromes, pain, function and lifetime prevalence of medically unexplained symptoms in 77 out-patients with chronic fatigue syndrome (CFS) without DSM-III-R depression, 42 CFS out-patients with DSM-III-R depression and 26 out-patient with primary DSM-III-R depression.


RESULTS
Both CFS groups differed significantly from the primary depression group but not each other in the prevalence of tension headaches (P < 0.001), reporting of widespread bodily pain (P < 0.001) and the number of lifetime medically unexplained symptoms (P < 0.001). The three groups did not significantly differ in the prevalence of irritable bowel syndrome or fibromyalgia. CFS patients with depression were more impaired in social function than other CFS patients.


CONCLUSIONS
Depression is not associated with the reporting of pain, psychophysiological syndromes and medically unexplained symptoms in CFS patients. Depression is associated with decreased social function in CFS patients.


CONCLUSIONS
Study depended on recall of symptoms, not confirmed by medical records and current investigations. Patients with depression were taking antidepressants.


CONCLUSIONS
Treating depression in chronic fatigue syndrome is unlikely to diminish reporting of pain and medically unexplained symptoms but may improve social function.
Morriss
R K
RK
Department of Community Psychiatry, Royal Preston Hospital, University of Manchester, UK.
Ahmed
M
M
Wearden
A J
AJ
Mullis
R
R
Strickland
P
P
Appleby
L
L
Campbell
I T
IT
Pearson
D
D
D000328:Adult; D000928:Antidepressive Agents / Q000627:therapeutic use; D003109:Colonic Diseases, Functional / Q000209:etiology; D003430:Cross-Sectional Studies; D003866:Depressive Disorder / Q000150:complications* / Q000188:drug therapy / Q000453:epidemiology; D015673:Fatigue Syndrome, Chronic / Q000150:complications / Q000209:etiology / Q000523:psychology*; D005260:Female; D005356:Fibromyalgia / Q000209:etiology; D006261:Headache / Q000209:etiology; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000209:etiology* / Q000523:psychology
D000928:Antidepressive Agents