There are many triggers for migraine, all of which can be realted back to the Tirgeminal nerve or upper cervical nerves in some way, and while smell being one of our special senses is sensed through the olfactory nerve, the lining of the nasal passage is “sensed” by the trigeminal nerve.
So if something flies up your nose, or you smell something very acidic that has that “bite” or “burning” quality to it, this information is sensed by you trigeminal nerve.
We know that across all major headache types the area in the brainstem where the trigeminal nerve and upper cervical nerves terminate is overactive - the cup is almost full.
If you smell something, that also has an affect on the lining of the nasal passage, and it goes back into the brainstem where there is a lot of overactivty, this extra information can “fill the cup over the brim” and a migraine is what results.
This overactivityor fullness of the cup is often realted to treatable problems in the upper cervical spine, and much lke ingestant triggers (chocoloate, red wine) is not an allergy.
Treatment of the upper cervical spine in affected people can result in “emptying the cup” and you being able to smell strong smells again, or others being able to drink or eat their usual triggers without fear of migraine.Regards,
Roger O'TooleDirector Melbourne Headache Centre
Phone: 03 8648 6487www.melbourneheadachecentre.com.au
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