Videre non videri
Join Date: Sep 2004
Location: Gothenburg, Sweden
Bikes: 1 road bike (simple, light), 1 TT bike (could be more aero, could be lighter), 1 all-weather commuter and winter bike, 1 Monark 828E ergometer indoor bike
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There is such a thing as exercise-induced migraine. I suffer from it, unfortunately. Doesn't matter how hydrated I am. If it happens to be one of those days, I get an "attack". For that reason, I always carry paracetamol on longer trips, as that provides quick relief for me (within 20-30 minutes).
That said, I have to say it doesn't happen that often. Maybe on one out of five rides (long rides).
It seems to be triggered by overheating, so I can sometimes thwart it by removing a layer of clothing, helmet cap or simply unzipping my jersey. A couple of times (on warm summer days), I've poured water from my bottles over myself to cool down.