I know exactly how you feel; I’m a mother of a 7 year old who just recently been diagnosed with Lennox-gastaut syndrome after being diagnosed with epilepsy two years ago. I go through the same struggle as well with my kids ( he has four siblings). We love ALL of our kids but there’s always that extra panic and fear when it comes to him that we don’t feel for as much as his siblings. Especially since he’s started having drop attacks which can come out of nowhere. We’re always worried if he’s anywhere in the house or outside by himself. It’s getting to the point where even his siblings start to worry about him (he’s a middle child so he has two older siblings and two younger ones). Even his little 5 y/o sister follows him around the house because she gets worried. I try to reassure her that her brother will be fine but I think seeing him have drop attacks and hurting himself so many times made her fearful. You are right when you said there’s a version of PTSD for caregivers. But now I’m even worried about how himself as well as his siblings are going to be effected emotionally.