I’m not sure why the therapist thought that depression would “resolve” if the ADHD is treated. That’s not really how it works. In fact it’s typical to start treatment for mood disorders first in these cases, though recent research indicates that antidepressants are much more effective if you are also treating the ADHD. Wellbutrin can be useful, as can cognitive behavioral therapy directly related to depression. Consider seeing another therapist (though not necessarily getting rid of the current one – maybe getting a couples counselor who understand ADHD and depression) and/or reading more about ADHD with comorbid mood disorders. Your husband has a dual diagnosis – treating one and hoping the other will go away on its own is not the answer.