Disorders of the cranial nerves ke-12/saraf hypoglossal ( hypoglossal Nerve Disorders ) causes weakness or wasting ( atrophy ) of the tongue on the affected side . This nerve to move the tongue .
CAUSE
The cause of the hypoglossal nerve irritation include a tumor or abnormal bone at the base of the skull , stroke , infection of the brain stem , or injuries to the neck , such as those due to surgical removal of the blockage of arteries in the neck ( endarterectomy ) . Amyotrophic lateral sclerosis ( Lou Gehrig's disease ) can also damage the hypoglossal nerve .
SYMPTOMS
The tongue may be weak in the affected and eventually wastes away ( atrophy ) . As a result , people have difficulty speaking , chewing , and swallowing . Damage caused by amyotrophic lateral sclerosis to make a thin , smooth circular movements ( fasciculation ) on the surface of the tongue .
Diagnosis
Magnetic resonance imaging ( MRI ) is usually done to see evidence of a stroke or tumor . A spinal tap ( lumbar puncture may be needed if cancer or infection is possible ) .
TREATMENT
Treatment depends on the cause .
