He is 14 and has autism, ADHD and oppositional defiance disorder.
He hates people near him and can't stand being touched not even by me and we are pretty close.
His hairs a mess and I've usually bribed him to get his hair cut and taken a week to get him prepared for it, he does this weird thing where he completely shuts down while it's being done, like he's not there.
He does have terrible dandruff though because I'm struggling to get him to wash properly 
Aibu to let him make his own decisions abut his hair since he is 14, my mum certainly thinks I am