I know it could take weeks, months, up to a year, but could it take less than 48 hrs? The in-laws visited M last night and said he was talking a mile a minute their entire visit and they were "exhausted" by the time they got out of there. They said he was well behaved and he was focused (so, it wasn't like ADHD hyperactive where he was all over the place), but just would not stop talking and very hyper in that sense. Then we called to see how the rest of his night went and the staff said he couldn't get to sleep so they had to give him benadryl. Could be nothing...but my radar is up. Can an SSRI trigger mania THAT quickly? Is that even possible?