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.