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During physical examination, an involuntary reaction to stimulation of a tender area or trigger point. This may take the form of wincing or sudden jerking of the part being examined, of adjacent areas, or even of the entire body. This sign should not be confused with the startle reaction seen in Jumping Frenchmen of Maine.
See also: sign
n an indication of trigger point location in which the patient forcefully pulls away when the trigger point is contacted.