The purpose of study was to examine changes in an occupational therapy intervention program. The program was based on cognitive behavioral therapy intervention that graded exposure in vivo with 8 participants suffering from complex regional pain syndrome due to upper extremity dysfunction. We compared the following assessments through intervention:Complex Regional Pain Syndrome (CRPS), Cognitive function for Pain Catastrophizing Scale (PCS), psychological status for Hospital Anxiety Depression Scale (HADS), Activity of daily living for Pain Disability Assessment Scale (PDAS), disability due to upper extremity dysfunction (HAND 20), body function related to upper extremity function by Simple Test for Evaluating hand Function (STEF), lateral pinch power, and grip strength examination. There was improvement in CRPS, PDAS, and HAND. However, there was no significant change for cognitive function nor psychological status. Cognitive behavioral therapy based on graded exposure in vivo improves upper limb dysfunction of CRPS type. However, it is necessary to replicate the assessments specific to CRPS and OT programs in the future.
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