trigger zone


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trig·ger point

a specific point or area where stimulation by touch, pain, or pressure induces a painful response.
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

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

trig·ger point

(trig'ĕr poynt)
Pathologic condition characterized by a small, hypersensitive area, occurring in a predictable pattern within muscles or fascia.
Synonym(s): trigger area, trigger zone.
References in periodicals archive ?
For each patient a number of variables were record- ed including demographic details presenting complaint site of occurrence of pain trigger zone edentulous area of previously extracted tooth/ teeth and radiographic evidence of jaw bone cavitation.
* Chemoreceptor trigger zone. This can be activated by drugs including opioids, digoxin, NSAIDs, and antibiotics.
Labyrinth stimulation activates the chemoreceptor trigger zone and can lead to emesis.
Phenothiazines, butyrophenones, and metoclopramide (Reglan) have the most direct effect on blocking the pathway between the center in the medulla that controls vomiting and the chemoreceptor trigger zone. The drawback of dopamine antagonists is their dystonic effects.
It may be precipitated by some actions at trigger zones. The diagnosis of trigeminal neuralgia is based on diagnostic criteria for classic trigeminal neuralgia, neuroimaging and electrophysiologic trigeminal reflex testing.