Allergies & Migraine

Can a Migraine also be a symptom of an Allergic reaction to something?

Ive had migraines for as long as i can remember, since i was a teen, Ive also suffered with what i thought was hayfever/dust allergy again, for as long as i remember, having periods of streaming eyes, sneezing and blocked nasal passages for weeks at a time, (but no other cold symptoms etc) and which go away with Anti histamines, now, Im due to hit the big 40 this year and in the last few years my symptoms have escalated, I think my previous work in forensics and the constant washing etc has sensitised me to something, and my allergies and migraines have become more frequent, to the point im now on vitrually permanent anti-histamines and im going for skin patch testing in a months time. I get migraines around once a week now, and if i dont catch the triggers (subtle tapping/throbbing on the soft spots on the sides of my head, and sudden extreme tiredness and falling asleep without warning when i didnt even think i was tired prior) the migraine can last 2-3 days in total.

Ive just had my second bad reaction to loose egg (as in cooked with a runny yolk)Ive been avoiding eggs as i thought it might be a trigger, and within 2 hours of eating it, i was extremely tired, fell asleep on the sofa, so hubby took me to bed, and i woke up at 6 am feeling like Mike Tyson had punched me in the left cheek and head, it happened last time i at eggs too, so im wondering, could these migraines also be a sign of the possible food allergy?