You probably have brain cancer.
Just kidding. I have several friends that get headaches when they drink shitty beer (aka bud, coors, miller). They solved the problem by drinking better quality beer or switching to liquor. There is something different about the massed produced American shit beers that causes some people to get headaches. If you google it you can find out more info. Here are some good places to start.
Hydrogonian has some good advice.
Just kidding. I have several friends that get headaches when they drink shitty beer (aka bud, coors, miller). They solved the problem by drinking better quality beer or switching to liquor. There is something different about the massed produced American shit beers that causes some people to get headaches. If you google it you can find out more info. Here are some good places to start.
Hydrogonian has some good advice.