BMJ · 1994 · 271 citations · 12 references
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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Development of a fatigue scale
Trudie Chalder, G. J. Berelowitz, Teresa Pawlikowska et al. · Journal of Psychosomatic Research · 1993 · 2.9K citations
A scale for the estimation of sleep problems in clinical research
C. David Jenkins, Babette-Ann Stanton, Steve J. Niemcryk et al. · Journal of Clinical Epidemiology · 1988 · 1.2K citations
Reliability, Sleep Medicine, Sleep +11