Complex Regional Pain Syndrome
Complex Regional Pain Syndrome right foot, significant increase in sympathetic motor tone right foot 3.7°c colder than left foot. A cold stress test was positive, (no sympathetic change).
CRPS developed in the right foot after a fractured calcaneum 18 months previously. Weight bearing was painful. The diagnosis of CRPS was missed initially since nuclear imaging was not typical of CRPS.
Some cases of CRPS are misdiagnosed as psychological or hysterical pain states. Thermography is able to show characteristic changes if utilized.