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Bulbar palsy refers to a range of different signs and symptoms linked to impairment of function of the glossopharyngeal nerve , the vagus nerve , the accessory nerve , and the hypoglossal nerve. It is caused by a lower motor neuron lesion in the medulla oblongata, or from lesions to these nerves outside the brainstem. This may be caused by any of a number of genetic, vascular, degenerative, inflammatory, and other underlying conditions. It can be differentiated from pseudobulbar palsy. When there is airway obstruction, intubation is used.
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