Neurological symptoms may include, among others, dysarthria, truncal, limb and gait ataxia and nystagmus. Most reported paroxysmal attacks are painful tonic spasms, dysarthria and ataxia, numbness and hemiparesis. Slurred speech (dysarthria), and disordered vocal quality (dysphonia) are also common. Speech therapists may assist in assessing, treating and supporting speech (dysarthria) and swallowing difficulties (dysphagia). These symptoms include dysarthria, nystagmus, and hypoplasia of the cerebellum and vermis. Scanning speech is an ataxic dysarthria in which syllable durations are equalized. There are three major types of dysarthria in cerebral palsy&colon; spastic, dyskinetic (athetosis), and ataxic. Other symptoms include muscle hypertrophy, neck pain, dysarthria and tremor. Adult patients experienced extreme salivation, limb deformity, and irreversible dysarthria and intelligence loss. Ataxic dysarthria is an acquired neurological and sensorimotor speech deficit. Symptoms of an overdose include tachycardia, agitation, dysarthria, decreased consciousness, and coma. Between attacks they have nystagmus and dysarthria. It is also a feature of ataxic dysarthria. By day 2 (D2), many patients experienced confusion, agitation, dysarthria, mutism and incontinence. It is characteristic of the dysarthria of multiple sclerosis.