ABSTRACT
Fibrous dysplasia is a developmental disease of bones of unknown etiology. It was first described by Lichtenstein in 1938. There are two forms, monostotic and polyostotic. The most commonly involved bones are the costa, femur, tibia, maxilla, and mandibula. It is often seen incidentally. Complex regional pain syndrome (CRPS) is a condition characterized by sensory, vasomotor, sudamotor, and trophic changes. The pain is regional (not in a specific nerve territory or dermatome). It is divided into two as type 1 and type 2. In particular, CRPS type 1, which is encountered without any nerve damage, sometimes affects the patient more than the discomfort that causes the etiology. The diagnosis is usually made clinically. In this study, she applied the clinic of CRPS; we present the unusual clinical and radiological findings.