It seems like I'm not alone in my post Fringe recovery. This article says a lot about how it's hard to adjust after the Edinburgh silly season. In the case of this particular year, I've had a rather optimistic looking life to return to, for once, and it's been a happy time after the Fringe, but I've still found an itchiness and a slump in my behaviour, which is now starting to leave me.

Experience can tell you to expect it and show you how to deal with it. It can't stop it from happening, though.