Hey are you looking for neurologist near Mylapore? What causes dysarthria ? It occurs when the muscles that produce clear speech do not work correctly. This can include muscles in the tongue, throat or lips. This is usually caused by a disease or an injury that damages the brain or body’s nerve or muscles It can happen due to 1 stroke 2 Parkinson’s disease 3 amyotrophic lateral sclerosis 4 myasthenia graves 4 muscular dystrophy Medicines like sedatives and hypnotics also result in dysarthria