I have ADD and sleep apnea, a double whammy of conditions that society likes to mislabel as 'character flaws'. I took ADD for a few years; it helped at first but after a year or so I had to stop because I was becoming very angry when on it. I believe the exhaustion/constant jet lag of the apnea (even with CPAP treatment) and work/kids entirely depleted my patience and self-control and the adderall then exacerbated my temper. I'd much rather be foggy/forgetful than angry.