More than half of the days lost due to sickness absence are due to dia
gnostic groups that solely or mainly depend on subjective statements f
rom the patient. The most frequent subjective health complaints are mu
sculoskeletal pain. These conditions do not seem to qualify as psychia
tric or mental disorders, but are not strictly somatic states either.
Terms like somatization may be inadequate terms for states that may be
best understood as psychobiological feedback loops. Subjective health
complaints is suggested as a neutral, descriptive term. Only a minori
ty requires treatment and sickness compensation for prolonged periods
for these very common states. In these patients the neurons in feed-fo
rward and positive feed-back loops may have developed sensitization. T
hese patients tend to show an abnormal sensitivity to sensory input fr
om muscles, the gastrointestinal tract, and to smell and taste. It see
ms to be futile to search for single-factor solutions. This approach o
pens up for the possible effectiveness of many different types of trea
tment, breaking the feedback loops.