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trigger zone

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trigger zone
n.
A specific area that, when stimulated by touch, pain, or pressure, excites an attack of neurologic pain.

trigger zone
the initial segment of a neuron; the first segment of the axon after it leaves the cell body.

trigger zone
Neurology 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


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