Table 1:

Clinical NST for trigeminal neuropathy^a

	Level A: Spatiotemporal Sensory Perception	Level B: Contact Detection with Monofilament	Level C: Pain Threshold and Tolerance
			Heat Temperature Threshold <47
			Heat Temperature Tolerance <50
	Direction Sensitivity <90%		Pressure Pain Threshold <1.5 lb.
	Static 2-Point Discrimination <18 mm	<2.83	Pressure Pain Tolerance <2.0 lb.
Normal	Present	Present	Present
Mild	Failed	Present	Present
Moderate	Failed	Failed	Present
Severe	Failed	Failed	Elevated
Complete	Failed	Failed	Absent

^aPresent: values recorded at test and control sites exhibit comparable sensitivity within published normative range. Failed: values recorded at test site sensitivity are less than that of control sites or published normative range. Elevated: values recorded at test site sensitivity are greater than that of control sites or published normative range but below maximum of test device (ie, 6 lbs.). Absent: values recorded at test site sensitivity are greater that maximum of test device (ie, 6 lbs.).