Bell’s palsy refers to facial paralysis caused by a lesion or inflammation of the facial nerve. Symptoms resemble a stroke, with unilateral facial weakness. However, most facial weakness from strokes spares the forehead muscles. These are weakened with Bell’s palsy. Patients will have unilateral facial weakness that often causes difficulty with eyelid closure, dropping of the affected side of the mouth and reduced ability to wrinkle the forehead or the nose.