Evaluation of individuals who may have Bell palsy requires a good history and physical examination. It especially must include a neurologic assessment in light of the facial alteration which results from muscular dysfunction. Specifically, the clinician has to look closely at the patient’s eyebrows to determine whether it has a sag or droop .
The physician will also want to know whether the client has any difficulty when he or she tries to raise the corner of the mouth or pucker the lips. There may also be a flattening of the nasolabial fold of the face, and some people are not able to successfully close one of the eyes. Moreover, those who have Bell palsy may not exhibit any wrinkling of the forehead when they raise their eyebrows .