I think this person needs to be on a different med. Adderall should be switched if it causes this much a personality change. I was ADHD as a kid and took ritalin, that was a ride -- no appetite, too much energy (at least it seemed that way to me, my parents said it slowed me down) and huge temper outburts (although looking back I think that was just my emotional immaturity, and the fact that I was actually adhd AND undiagnosed BiPolar).
When they took me off at puberty, I blew up weight wise and became an introvert and VERY shy. I couldn't even talk to women and even had trouble thinking about women I met and knew in a sexual way.
Then I was diagnosed BiPolar, and started taking a mood leveler, depokote. and my sexual appetite increased expontentially. Unfortunately, my shyness and my teenage lack of building social skills for communicating with women makes it hard for me to approach them and even interact with them in anything but a professional or light freindly manner.
But Now when I take adderall I have a normal appetite and can control my anger (I'm usually going through a manic or depressive episode before I go through a temper outburst).
Your DH should talk to his doctor and see if there is an alternate med he could switch to...