Noun
impaired articulatory ability resulting from defects in the peripheral motor nerves or in the speech musculature
Source: WordNetIt is characterized by acute paralysis, dysphagia (difficulty swallowing), and dysarthria (difficulty speaking), and other neurological symptoms. Source: Internet
The accumulating damage to this area causes the characteristic erratic movements associated with HD. citation The spontaneous and erratic physical movements associated with HD are classified as a type of hyperkinetic dysarthria. Source: Internet