I don't think there's enough to go on, to be honest. It sounds like you definitely have communication issues. If he was going to give his version of events how would it sound?
To play Devil's Advocate could it be something like this:
I'm in a huge amount of pain right now with this thing that appears on my knuckle. I'm terrified of what it is in case it's serious and I'm too frightened to go to my GP about it. It's causing me a lot of stress and anxiety, and when my daughter knocked it accidentally the other day I howled in pain it was so sore. My partner seems to think I shouldn't have done that, but I wasn't shouting or yelling, it was an instinctive cry out that I couldn't control. My daughter was upset so she went to her mum, I understand that.
Things have been difficult for a while, I find the way my partner talks to me is combative and I can't handle it well, especially with the stress I'm feeling at the moment. She always needs to prove herself, she's even taken to writing things down and we argue over trivial details of what has come up before. I know this might stem from childhood for her as she had similar issues with her family growing up. I just can't win. She thinks I am twisting what she says but I'm genuinely not trying to do that but we certainly do have different recollections of things that have been said in the past. Things always seem to escalate, so I just walk away and don't say anything. It's the best way I know how to handle the situation but my partner thinks I am sulking and going into moods.
Now she's on this website and seems to have me labelled as an abuser and a covert narcissist. I have no idea where this has come from, I know I can go quiet, and that's not maybe the best way of coping with things, but when I try to address things I am accused of manipulating, when I'm just trying to say how I find things.
We agreed to try counselling, but now she seems to think that I will get one over the counsellor or something!! So it looks like that is not going to happen. I don't think there's anything that can be done, I've been painted into a corner, everything I say or do will be used against me and further define me as an abuser and covert narcissist. I can't cope and I just need to retreat now. I think we're at an impasse and we need to split.