Metabolic Anomolies Associated With the 6 Month Clinical Evolution of Patients Suffering From Motor Conversion Disorder

Inclusion Criteria: * The patient must have given free and informed consent and signed the consent * The patient must be affiliated with or beneficiary of a health insurance plan * The patient meets DSM-IV criteria for motor conversion disorder (with paralysis, motor weakness or abnormal movements) lasting for less than 1 month and euthymic (HAMD score \< or = 7, as evaluated by a psychiatrist) * First episode (incident cases) * The latest symptom dates to within a month * The patient is not under neuroleptics Exclusion Criteria: * The subject is participating in another study * The subject is in an exclusion period determined by a previous study * The subject is under judicial protection, guardianship or curatorship * The subject refuses to sign the consent * It is not possible to correctly inform the patient * The patient is pregnant, parturient or she is breastfeeding * Specialized clinical neurological examination and brain and spinal cord MRI revealed an organic neurological cause * The subject has a HAMD score \> 7 * The subject currently has manic/hypomanic episode, a diagnosis of substance abuse or dependency (excluding tobacco), a diagnosis of schizophrenia (any time in the past) or chronic neurological disease (active epilepsy, stroke, brain tumor) * Suicidal or high risk for suicide (according to MINI assessment) * Contra-indication for a PET scan * Patient under neuroleptics at inclusion * The last symptom happened over 1 month ago * The patient has had previou…