Dysarthria is a motor speech disorder resulting from neurological injury of the motor component of the motor-speech system and is characterized by poor articulation of phonemes (cf. aphasia: a disorder of the content of language) common causes of dysarthria include nervous system (neurological) disorders such as stroke, brain injury, brain tumors, and conditions that cause facial paralysis or tongue or throat muscle weakness. Certain medications also can cause dysarthria. Articulation problems resulting from dysarthria are treated by speech language pathologists, using a variety of techniques. Techniques used depend on the effect the dysarthria has on control of the articulators.
Traditional treatments target the correction of deficits in rate (of articulation), prosody (appropriate emphasis and inflection, affected e.g. by apraxia of speech, right hemisphere brain damage, etc.), intensity (loudness of the voice, affected e.g. in hypokinetic dysarthrias such as in Parkinson's), resonance (ability to alter the vocal tract and resonating spaces for correct speech sounds) and phonation (control of the vocal folds for appropriate voice quality and valving of the airway) treatment: You may have speech and language therapy to help you regain normal speech and improve communication. Your speech therapy goals might include adjusting speech rate, strengthening muscles, increasing breath support, improving articulation and helping family members communicate with you.
Your speech-language pathologist may recommend other communication methods (augmentative and alternative communication systems) to help you communicate, if speech and language therapy isn't effective. These communication methods could include visual cues, gestures, an alphabet board or computer-based technology. research : New Method to Assess Effectiveness of Muscular Dystrophy Drugs Developed