narcolepsy
"I have only been on Provigil for a month, but it has caused extreme nausea and headaches. I have a history of cluster headaches and migraines, which had diminished, but are now back in full force. I've also had stomach cancer twice and Provigil makes me very nauseous and losing weight due to an inability to eat. I'm glad that it is effective for some, I just wish that I was in that group because I am TIRED."