Dystonia induced by peripheral trauma Organic or psychogenic?

Dystonia is defined as a syndrome of sustained muscle contractions, frequently causing twisting and repetitive movements or abnormal postures. A cause-and-effect relationship between brain injury and subse-quent movement disorder is well established, but a link with peripheral trauma is more controversial1. Our ob-jective is to discuss the challenge of the differential diag-nosis between organic or psychogenic dystonic posture in a patient with post-traumatic hand dystonia. Patient A 16-year-old right-handed girl developed an ab-normal posture of the right hand one week after a fall. The symptoms got steadily worse and a fixed posture (flexion and subluxation of the third and fourth right fingers, flexion and aduction of the right thumb an