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Trigger
Trigger
Medical term · T
Anything that can set off symptoms.
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Related terms
Antigen
A substance in the blood that helps trigger the immune system to develop antibodies. See blood group.
Epinephrine
A chemical that narrows blood vessels, increases heart rate, and helps trigger the fight-or-flight response to danger. Also called adrenaline.
Trigeminal neuralgia
Pain from a disorder of the trigeminal nerve, the chief sensory nerve of the face. Also called tic douloureux.
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