Head butting

fran

So Max is the 15 months and has been head butting since he was 10 months I thought he would of outgrown it by now but it seems to be getting worse I have a 14 year old with autism and a 9 year old with sensory processing disorder he shows a lot of sensory behaviour but some could also be due to his age he head buts when he is upset or told no or has something taken off him he also does it in his cot when he is falling asleep this is what makes me think it’s sensory and he also does it whilst just sitting when he’s in his high chair or even when he’s on the floor he bangs the back of his head against the wall or door I try to stop him but then he just does it to me he has also done it to both my children full force in the face and me and my husband he buts my knee and anything he can really yesterday he done it in his high chair and jammed my arm between that and the chair and brushed my arm he is behind on his development and health vister has asked for him to be seen by a pead but peads have refused to see him don’t really know what else to do