BMJ : British medical journal
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To determine the relation between tender points, complaints of pain, and symptoms of depression, fatigue, and sleep quality in the general population. ⋯ Tender points are a measure of general distress. They are related to pain complaints but are separately associated with fatigue and depression. Sleep problems are associated with tender points, although prospective studies are needed to determine whether they cause tenderness to develop. Fibromyalgia does not seem to be a distinct disease entity.
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Reviewing the literature is a scientific inquiry that needs a clear design to preclude bias. It is a real enterprise if one aims at completeness of the literature on a certain subject. ⋯ On line databases are helpful, but mainly as a starting point. This article gives examples of systematic reviews on vitamin C and the common cold, pyridoxine against the premenstrual syndrome, homeopathy, and physiotherapy.