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|Classification and external resources|
Pseudobulbar palsy is bilateral impairment of the function of the lower cranial nerves IX, X, XI and XII which control the muscles of eating, swallowing and talking. It is the result of an upper motor neuron lesion to the corticobulbar pathways in the pyramidal tract.
- Vascular causes: Bilateral hemisphere infarction
- Degenerative disorders: motor neuron disease
- Inflammatory disorders: Multiple sclerosis
- Malignancy: High brain stem tumors
- Metabolic causes: osmotic demyelination syndrome
- Brain trauma
- Speech is slow, thick and indistinct
- Gag reflex is normal, exaggerated or absent
- Tongue is small, stiff and spastic
- Jaw jerk is brisk
- There may be upper motor neuron lesion of the limbs.
Bulbar palsy is a similar disorder but is caused by lower motor neuron lesions
- ^ Bourgouin PM, Chalk C, Richardson J, Duang H, Vezina JL (Aug 1995). [Expression error: Missing operand for > "Subcortical white matter lesions in osmotic demyelination syndrome"]. American Journal of Neuroradiology 16 (7): 1495-14977. PMID 7484639. ]
- ^ McCormick WE, Lee JH (May 2002). [Expression error: Missing operand for > "Pseudobulbar palsy caused by a large petroclival meningioma: report of two cases"]. Skull Base 12 (2): 67–71. doi:10.1055/s-2002-31568-1. PMID 17167648.
- 248512525 at GPnotebook - "pseudobulbar palsy"
- 456458269 at GPnotebook - "comparison of bulbar and pseudobulbar palsy"
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