The following information may help to address your question:
Pseudobulbar palsy is caused by lesions of the corticobulbar tracts (upper motor neurons). These tracts contain nerves which control muscles of the head and face (including the pharynx, palate, lips, tongue, and larynx). The lesions may develop in association with strokes, blood cancers (leukemia), or trauma. Pseudobulbar palsy can also occur in association with CADASIL, progressive supranuclear palsy, central pontine myelinolysis, congenital bilateral perisylvian syndrome, pachygyria and acquired epileptiform opercular syndrome (seizure induced symptoms).