Allergic rhinitis is a reaction that is caused after an exposure to an allergen which provokes an immune response. Then, inflammation develops within the nose causing congestion, runny nose, post nasal drip and sneezing. Allergic rhinitis can occur seasonally or perennially (year round). Common allergens are dust, pollen, pet dander and mold which may trigger migraine attacks for some people.
A study found that migraine was 14.3 times more likely among those with allergic rhinitis compared to a control group.1
In addition, allergic rhinitis can cause sinus headaches. “It was seen that among patients with sinus headache referred to otolaryngology clinics, up to 75% may have histories compatible with the migraine criterion.”2