Heh, I've always felt like Harold. For that matter, I've also always felt like Henry Fool.

Most good professors will look at the note and treat it like any other medical problem a student could show up with. They will work with you to find solutions. And don't worry about appearing confident, etc. That you didn't let your problem force you out of their class usually indicates a high level of maturity and they'll likely respect that.

Cyran0