The clinician gently holds the patient’s chin against the radial side of their second digit from below and against their ventral thumb from the front. The examiner's thumb should be placed over the middle of the chin with the distal phalanx positioned in the skin crease between the lip and tip of the chin, as pictured below. In this position, the clinician asks the patient to slightly open his or her mouth, and with the patient's jaw relaxed, the clinician taps his or her thumb using the reflex hammer, rather than tapping directly on the patient's chin. Document normal or abnormal responses.

Special Instructions or Considerations