From:  Sensation-suppression theory: a new explanation for fibromyalgia syndrome and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS)

 Risk factors are explained or not explained by three types of theory.

Risk factorSensation-suppression theory (biology and psychology combined)Cognitive theory (psychology only)An unknown biological mechanism (biology only)
StressYesYesYes
NeuroticismYesYesNo
HypervigilanceYesYesNo
AlexithymiaYesNoNo
PerfectionismYesNoNo
Self-sacrificeYesNoNo
Diseases causing pain and FMSYesNoYes
Diseases causing fatigue and ME/CFSYesNoYes

FMS: fibromyalgia syndrome; ME/CFS: myalgic encephalomyelitis/chronic fatigue syndrome.