How do your parents/ILs get along with your DC? Are they good at understanding your DC's abilities/limitations? Have you had conversations with them to explain your DC's dx and how it affects your DC?
My parents kind of stink in this respect. It's not really surprising since I'm fairly sure both of my sisters suffer from ADHD that has presented in different ways (my older sister has zero executive functioning skills and was quite ODD as a child, my little sister also has trouble with executive functioning but also was very socially immature) and my parents didn't deal with it well either. They also don't relate well to MH who has ADHD. My parents are a bit of control freaks, DS and DH have impulse control issues ... you can imagine how this could cause problems.
It can't hurt just to sit down and level with them, right? If you've done this, did it help?
Re: If your DC has ADHD ...
My stepdaughter has ADHD and ODD, my stepson has Asperger's Syndrome and ADHD. No one in DH's family or my family knew anything about those dx, so they weren't sure what behaviors were "normal/appropriate" for "kids like them". I am a social worker so I 100% understand the workings of these disorders. I sat both families down (sort of family meeting style) and explained to each of them what they should/shouldn't expect from the kids, how the kids' illnesses can effect the kids, and those people around them, and how to best handle any issues they may have.
I felt silly doing it, but in the end it seems to have helped. I felt like they families should be educated and that that would help them develop compassion for what the kids are going through, and it seems to have done just that.
Do you ever feel like they chalk it up to bad parenting? I'm sure my parents think I'm not tough enough on DS, but being tough gets us nowhere (not to say he is without discipline, that's not the case at all).
Side note: Thank you, auto correct, for making parents' into parents's. My 3rd grade teacher is rolling over in her grave right now.