If you notice a commonality to the allergy, great, you can
avoid those thin
gs. You can
even write down everythin
were exposed to, close to the day you got the reaction, and figure it out. And anytime you get a runny nose, you are goin
g to get a headache, so could be a few allergies are at the root of your migrain
es. Which a very good idea if you tend to get allergic, is to build up your immune system by eatin
g well and so forth, the stuff I recommended earlier.