N.G.
I think all the answers you got are based on NORMAL child support as dictated by the courts. My ex is on SSD for Bipolar as well (my condolences) and SSD payments are divided among his dependants. I haven't had to check this out recently, but when I checked this several years ago, I was told that if he had additional children, the check would be divided among all of them. Just the opposite happens when children become adults, the money that was going to the older children will be divided among the younger ones left. In other words, there is only a specific amount that they take of his benefits and that amount is divided to all his children. Check this out directly with the Social Security office. By the way, my kids by him are ADHD too. Two are now adult, and two are teens. If you ever want to talk......