Abstract
Introduction Manic-depressive psychosis (MDP) and multiple sclerosis (MS) coexistence is unusual but well-proven. Observations We report two cases observed in two women aged 30 and 31, who were followed up for neurological episodes associated with concomitant or deferred manic or depressive fits. Brain magnetic resonance imaging revealed multiple zones of high intensity signals in the white matter. Biological balance was normal. The diagnosis of multiple sclerosis (MS) was established. Given to treat acute episodes, high-dose corticosteroids enabled regression of the psychological fits. Similarly, long-term treatment in one patient enabled significant regression of fits, which became less frequent and less severe. Discussion/conclusion The MDP–MS association may be due to local MS-related brain damage or to common genetic susceptibility. The positive effect of corticosteroids against psychological fits is another finding favouring an organic cause of these disorders.
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