Impairment of speech (articulation), caused by damage or disorder of the tongue or speech muscles. Symptom may indicate pressure on the brain stem (medulla oblongata) or elsewhere in the posterior fossa.
Disorders of speech articulation caused by imperfect coordination of pharynx, larynx, tongue, or face muscles. This may result from cranial nerve diseases, neuromuscular diseases, cerebellar diseases, basal ganglia diseases, brain stem diseases, or diseases of the corticobulbar tracts. The cortical language centers are intact in this condition.