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a specific point or area where stimulation by touch, pain, or pressure induces a painful response.
Examples Lips and buccal cavity—evoking trigeminal neuralgia and tic douloureux—tonsillar or posterior pharynx—glossopharyngeal neuralgia—and muscles involved in myofascial pain syndrome
trigger zoneNeurology A circumscribed region near a nerve, often in the head & neck which, when stimulated, even with light touch, may elicit marked neuralgia accompanied by lightning pain Examples Lips and buccal cavity–evoking trigeminal neuralgia and tic douloureux, tonsillar or posterior pharynx–glossopharyngeal neuralgia and muscles involved in myofascial pain syndrome
trig·ger point(trig'ĕr poynt)
trigger point; trigger zone skin area exciting neurological pain, when touched see pressure point
the initial segment of a neuron; the first segment of the axon after it leaves the cell body.