Background: Cerebellum has an important role in sensorimotor control including speech. Multiple system atrophy (MSA) is a sporadic and rapidly progressive neurodegenerative disorder that presents with autonomic failure in combination with Parkinsonism or cerebellar ataxia.
Case report: We report a case of MSA-cerebellum subtype associated with emergence of irreversible explosive speech following olanzapine therapy.
Conclusions: Further investigation into speech problems in MSA according to subtype and disease severity is needed, and side effects of olanzapine therapy should also be considered.
Keywords: Antipsychotic Agents; Multiple System Atrophy; Speech.