financial disasters

I am having a problem managing, understanding and dealing with my ADHD husband's financial escapades. When he needs to go on a vacation, he has to go no mater what our financial state is. He is an impulsive spender and needs immediate gratification. If he needs an IPAD then he needs one now!! Trying to keep within a budget and delaying purchases and vacations seem particularly hard for him. Any suggestions?

More info

Does he work, and if so, what does he do?

Is he diagnosed ADHD, and does he accept it?

Does he take medicine?

Has he seen the finances of the household?