Method Of Exam
|Author: A. Chandrasekhar, MD
||Consultant: M. Kelly, MD
and M. Merchut, MD
Trigeminal nerve has motor and sensory components
- Have patient clench teeth and feel the Masseters and Temporal muscles and compare sides. Note the strength of contractions. Edentulous patients may not be able to clench "teeth".
- With a light touch of cotton, check the patient's ability to detect light touch in all areas which are supplied by the three divisions of the fifth cranial nerve. Instruct the patient to close his eyes and respond by saying "yes" every time he feels the sensation of cotton touching his face.
- Compare corresponding contralateral segments of his face.
- Test pain sensation with a pin in each of the three divisions, comparing both sides.
- Test corneal (blink) reflex with a wisp of cotton lightly touched to the edge of the cornea. There should be a consensual eyeblink normally.