Up an down | ADHD Information

is it fairly common to have periods of highs and lows? There seem to be
times when life seems okay...dare i say i feel almost adhd-less...than
BAM everything sucks again. I start having trouble at work socially. I
really can't stand people sometimes.
I also become depressed and mildly suicidal (I wouldn't do it, but the
thought pops up in my mind). Everything gets worse when the adderall zr
wears off.

Am I crazy?