I am on the other side of things, as someone who has ADHD, but I can tell you a few things that I would suggest.

1. Make things about *you*. When he is humming for instance, and it is getting on your nerves, take a minute to say, "I am trying to focus on something else, and it is hard for me when you are making noises." If you make it more personal, maybe it will stick more. When all you say is, "omg stop", it probably goes right over his head because he hasn't taken the time to think about how it might be negatively affecting someone else, therefore he doesn't fully understand the impact it is having, and so it mentally doesn't stick.

2. In a time when you are not clashing, take the time to talk about plans for when you are in the middle of it. Taking a breather is a great idea, but he has to understand that it is because it is the best thing for both of you. ADDers often feel things very strongly, and he is probably reacting out of hurt when you leave, because he hasn't thought about the "why".

3. Give him a chance to explain himself. Sometimes, we have so many thoughts jumbled all inside our heads, and it takes us a while to get our thoughts accross, which can be a source of frustration. Because of that frustration, when someone gets on us, we are more likely to react in anger or defensively.

4. Patience and communication. Living with someone with and ADDer is not easy. It takes commitment on behalf of both. I suggest getting as edcated as possible about the disorder. I find that the website additudemag.com is very helpful (it has tips and advice as well as general information).

5. Ask the doc about taking a longer acting med so that you don't hav the chances for the clashes. It sounds like he may need all day coverage. I am on strattera, which is a 24 hr med.