Bilateral Bell's Palsy With Herpes Zoster Virus.

Bilateral Bell's palsy is a rare neurological condition characterized by the sudden onset of facial nerve paralysis on both sides of the face. Unlike the more common unilateral Bell's palsy, bilateral cases are often associated with underlying systemic or infectious causes, including viral infections. Herpes zoster virus, known for causing shingles, is a notable viral pathogen linked to facial nerve paralysis, primarily due to its ability to reactivate from latency within sensory ganglia. Although herpes zoster typically presents with a unilateral rash and nerve involvement, its atypical reactivation can lead to bilateral facial nerve involvement in immunocompetent or vulnerable individuals. This case report presents a rare instance of bilateral Bell's palsy in a patient who had recently completed treatment for a herpes zoster infection. It includes a discussion on herpes zoster and its association with bilateral Bell's palsy.