We’re still waiting on a diagnosis for DS (3.9). He’s non-verbal and whilst he used to be so affectionate and expressive in other ways, he’s becoming increasingly violent and angry, not sleeping, pulling away from any attempts at cuddles, biting, hair pulling - it’s like he’s had a sudden personality transplant in the last 2 weeks and I just can’t cope anymore. He’s tall for his age and strong, and I’m covered in scratches and bite marks and I just want to run away. I feel like I’m the worst mum in history and I don’t think I can do this. I’m letting him down.