Really upset but in the middle of family and can't deal with issue right now. D'S turned 14 a month ago, he's very bright (maths science type stuff, but no common sense), struggles to make friends, has been bullied on and off, and also has to deal with family stuff including a sibling with pmld (profound/multiple learning disabilities). Noticed a load of deep scratches on his right forearm a couple of weeks ago, not what I would call 'cuts' but not completely superficial, iykwim. Brought up in conversation 'oo, that looks sore, what happened there?' kind of way, he said it was the cat, which neither I nor DH believed as scratches from cat (which do happen occasionally, this is the real world and she's old and grumpy) are usually straight parallel lines, while these were curvy, almost more like doodles.
DH and I discussed how he is generally at the moment, and both feel he's happier and generally more relaxed than he was a year ago (we were moving house, having building work done etc) so maybe it was a one off or we're reading something into the situation and we shouldn't jump to conclusions.
His sister has just come downstairs asking if he's been dismantling pencil sharpener, he said no, what are you talking about. She's handed me the blade bit from a sharpener or disposable razor, telling me it was on their bathroom floor (upstairs bathroom that only she and he use).
Now thinking that was what he used, and maybe he's still doing it as the blade wouldn't have been on the floor there that whole time.
Help.