Facial Nerve Palsy is a condition that affects the facial nerve, leading to weakness or paralysis of the muscles on one side of the face. This can result in difficulty with facial expressions, such as smiling or closing the eye. The exact cause can vary, including viral infections, trauma, or other medical conditions. The most common type is Bell's Palsy, which often occurs suddenly and may resolve on its own within weeks to months. Treatment options may include medications, physical therapy, and in some cases, surgery, depending on the underlying cause and severity of the symptoms.