We had a similar case not long ago. A young lad who'd been thumped with minimal effect. I started taking observations but when I tried to take his BP, he whinged like a toddler who'd had a toy taken away from him. He was refusing to co-operate so I stopped taking obs and left him to it. Best thing was the previous job we had been to was an 82 year old lady with a query NOF who had been hobbling round most of the day because she didn't want to bother anyone. As we got off the truck a friend of this lad said to me "I don't know what it is but every time we go out he ends up getting hit!" Having been in his company for 20 minutes, I could fully understand why.