I was on Lexapro and experience head aches everyday, towards the end of the day, they were in the back of my neck and run all the way up the back of my head, to the front, they were horrible. I have begun weaning myself off of Lexapro for this reason mainly, and the headaches are pretty much gone.
I know prozac causes me some pretty ruff headaches. the kind i never get unless i'm on prozac. so i guess yes it could. for sure.