Speech Changes (Dysarthria)

Speech changes can indicate ALS (bulbar onset), Parkinson's disease (hypophonia), stroke, or MS. Progressive dysarthria warrants neurological evaluation.

Body System: Neurological

Related Diseases

• ALS — Bulbar ALS causes progressive dysarthria from tongue/palate weakness, with nasal speech quality.
• Parkinson's Disease — Hypophonia (soft voice) and monotone speech affect 70-90% of PD patients.

Related Compounds

• Riluzole
• Levodopa

Frequently Asked Questions

What causes speech changes in ALS?

ALS damages motor neurons controlling tongue, lips, palate, and larynx muscles. This causes progressive dysarthria (slurred, nasal, effortful speech), leading to eventual anarthria (inability to speak). Augmentative communication devices (eye-tracking, speech-generating devices) preserve communication ability.