migraine
"I have taken Relpax 3-4 times, and strangely enough I have had extremely vivid nightmares.  This is very unusual for me because I'm not the type to have nightmares.  Normally, I might have one per year, and suddenly as I have taken this medication I've had nightmares each night that I have taken the medication.  I think it's not a coincidence since this has already occurred 3-4 times in less than 2 weeks."