Pseudobulbar palsy

The pseudobulbar based on a bilateral injury of the pulling to the caudal cranial nerve nuclei in the brain stem area corticonuclear paths and leads to a central spastic paraparesis of the mouth and throat muscles.

Etiology and pathogenesis

Mostly, the pseudobulbar created on the ground of cerebral arteriosclerosis, and consequently multiple ischemic infarcts in the corticonuclear pathways to the caudal cranial nerve nuclei on both sides, the cause is accordingly a supranuclear lesion. The Beidseitigkeit is of importance because the caudal cranial nerve nuclei receive bilateral innervation of central ( cranial nerve nucleus of a page receives fibers from both cerebral hemispheres ). In rare cases, multiple sclerosis, syphilis or multiple brain metastases may be the cause.

Clinic

Similar to the "real" bulbar paralysis characterize dysarthric speech disturbances, impaired tongue mobility, dysphagia and hoarseness the clinical picture. However, fasciculations, fibrillations and atrophy of the tongue missing. The masseteric Flex can be increased significantly again. Frequently also signs of pyramidal tract damage are found in the extremities. Further characteristic is an affective lability and an (apparent) affect incontinence with forced laughter and forced wines.

Swell

• Delank, Gehlen. Neurology. Stuttgart 2004 ISBN 3-13-129780-8
• Mumenthaler. Neurology. Stuttgart 1990 ISBN 3-13-380009-4

• Disease in neurology