DS's teacher spoke to me this morning as she's concerned about DS, over the last 2 weeks he's become extremely tearful at school, crying on and off for most of the day. It's little things that are setting him off (well not little to him), such as making a mistake on his work but also his refusal to accept that the other children aren't always acting with malice towards him (for example another child accidentally stood on DS's foot yesterday but he point blank refuses to accept these incidents as accidents so ends up wound up and cross, thinking people have deliberately set out to hurt him).
He's also started to say he doesn't want to do his school work and refusing when asked to do it; this is really out of character for him as he's always been a stickler for rules and regulations. The teacher is finding ways of compromise but she admits she doesn't always know if she's doing the right thing by DS. The SENCO suggested talking DS to a quiet area on his own when he's getting wound up, but the teacher says she doesn't want DS to feel he's being singled out, she's also concerned DS will cotton on and think if he refuses to do his work he'll get to leave the classroom?
I haven't noticed much of an increase in stress at home, apart from him saying he's "had a bad day" but not telling me much, other than saying classmates are 'selfish' as they won't listen when he wants to tell them something and that 'people who smile when they say sorry don't mean it, they're tricking' (!), those two are things that have really bothered him this week 
I feel sad and worried about him, he's 6 btw.
We have no ASD diagnosis (can't seem to get one either), but a diagnosis of low muscle tone, hypermobility, dyspraxic tendencies (can't get an official diagnosis for dyspraxia either!), auditory processing difficulties and sensory difficulties. He has an IEP.
I don't know who to turn to or how to help DS, any advice would be much appreciated.