Why does a migraine make you tired?

Migraine slumber: This is very normal after migraines and is actually considered one of the stages of migraines. It's called migraine prodrome. Not everyone gets this, but is typically associated with a fog like feeling or tiredness. You might like this article: http://www.Theguardian.Com/science/2011/may/18/migraine-postdrome-research.

Migraine : Depends. Can be a side effect of the medications used to abort the migraine. Can also be do to the bodies stress response to the migraine itself.