Definition: Speech disorder in which the pronunciation is unclear, but the meaning of what is said is normal. In multiple sclerosis (MS), this is an impairment of speech production which usually results from lesions in the cerebellum. It can affect voice production, articulation, resonance and intonation. It can also cause people to speak in slow or strange rhythms.
Dysarthria should be differentiated from dysphasia or aphasia, both of which refer to problems understanding or communicating spoken or written words.
