[Serial computed thermography for Raynaud's phenomenon of patient with progressive systemic sclerosis (PSS)].

We reported a case with progressive systemic sclerosis, a relatively rare disease in childhood. Raynaud's phenomenon (RP) of the patient was serially monitored by computed thermography for 1 year. Although clinically apparent RP manifested only in winter season, thermographical changes were documented through all season, suggesting that RP is a constitutional sign which may emerge in winter by provocation of atmosphere. Thus, we recommend to use the words, "Raynaud's phenomenon" and " Raynaud's symptom", in an appropriate meaning. RP of the patient, however, varied depending on the time determined, which indicated that the cause of RP is not due to the irreversible tissue degenerations, but due to the reversible functional factors. Computed thermography was proved useful for detecting RP objectively, and will be valuable for estimating the effects of medications for RP.