“…Concurrent involvement of CNs such as CN V, CN IX, CN X, CN XI, and CN XII is rare, but leads to various symptoms of neurological deficits including impaired eye movement, trigeminal neuralgia, swallowing difficulty, hoarseness, and tongue deviation. Although the mechanisms are unclear, vasculitis in the carotid, middle meningeal, and ascending pharyngeal arteries, which can be infected by the direct perineural spread of the VZV along anastomotic pathways, may contribute to the development of cranial polyneuropathy in RHS [4]. The involvement of multiple CNs in RHS results in greater loss of function and is associated with a poor prognosis relative to facial nerve palsy regardless of the initial HBS grade.…”