Evaluation of the Effectiveness of a Heart Rate Variability Biofeedback Training in the Management of Dysfunctional (Somatoform) Disorders
To study whether Heart Rate Variability (HRV) biofeedback training can improve abnormal head posture and painful symptomatology in patients with cervical dystonia not selected for DBS after extensive screening in a specialized unit but diagnosed dysfunctional . Patients of the respiratory coherence group will receive HRV biofeedback training for 12 sessions during a 6 months-period. The hypothesis is that this kind of physiological noninvasive therapy increasing coherence respiratory, will reduce pain and patient's complain about their psychogenic abnormal head posture. Improvement of anxiety, depression and quality of life are expected.
• Age 18 to 75
• Responding to somatoform disorder characteristics as described in ICD-10 (F45: The onset of physical symptoms associated with an insistent medical quest, persisting despite repeated negative assessments and statements by physicians that the symptoms have no organic basis. If there is a genuine physical disorder, it does not account for the nature or severity of the symptoms, or the distress or concerns of the subject. The multidisciplinary team will determine whether or not the diagnosis of conversion disorder (disorder with functional neurological symptoms) of the DSMV (300.11) \[ICD-10 equivalent: F44.4 dissociative disorder with abnormal movements\] is associated with the diagnosis of conversion disorder (disorder with functional neurological symptoms) of the DSMV (300.11) \[ICD-10 equivalent: F44.4 dissociative disorder with abnormal movements\], selected by the multidisciplinary team after a phase 1 assessment.
• Patient benefiting from a social security scheme