Facial nerve disorders affect the facial nerve, which controls the muscles of the face. These disorders can lead to weakness, paralysis, or abnormal sensations in the face. Common conditions include Bell's palsy, which causes sudden, temporary facial weakness, and facial nerve tumors, which can disrupt normal nerve function. Diagnosis typically involves a physical examination and may include imaging tests like MRI or CT scans. Treatment options vary depending on the cause and severity of the disorder, ranging from medications and physical therapy to surgical interventions in more severe cases. Early diagnosis and management are crucial for recovery.