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Progressive bulbar palsy
Progressive bulbar palsy
(also known simply as
PBP
) is a medical condition. It belongs to a group of disorders known as
motor neuron diseases
. PBP is a disease that attacks the nerves supplying the
bulbar muscles
. These disorders are characterized by the degeneration of motor neurons in the
cerebral cortex
,
spinal cord
,
brain stem
, and
pyramidal tracts
. This specifically involves the
glossopharyngeal nerve
(IX),
vagus nerve
(X), and
hypoglossal nerve
(XII).
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