Disturbo dissociativo d'identità, auto-ipnosi e sintomi simil-psicotici: da un caso clinico a un problema di diagnosi differenziale.

We report a case of a forty-nine-year-old patient suffering from his first psychiatric episode, who required hospitalization in a psychiatric unit. The presence of mood alterations with Schneiderian first-rank symptoms could have suggested an initial diagnosis of bipolar disorder (BD) with psychotic symptoms, directing the patient towards a definite therapeutic process. However, we hypothesized that the presence of a clear dissociative state similar to the hypnotic trance preceded by an uncontrolled self-hypnosis process, the presence of ‘inner voices’ and a high vulnerability to dissociation, were all elements that may reasonably lead to a diagnosis of Dissociative Identity Disorder (DID). Several authors have reported the presence of psychotic-like symptoms in patients with DID. However, in clinical practice there is a tendency not to acknowledge the possibility of dissociative disorders diagnoses, in favor of others more frequent psychiatric disorders. This paper aims to highlight some etiopathogenetic and psychopathological features that might help clinicians in identifying a DID.