the skin isn't broken but the flesh is red.
He is generally unwell at the moment and I am not sure if he is moaning about his hand because he is down anyway or if it really hurts him alot.
I put some "special cream" on it this morning ( moisturiser) and that seemed to take his mind off it but he mentioned it 4-5 times before bed last night and 3-4 times before he went to school this morning.
If he does have a broken knuckle would it be of benefit to see a doctor or do these things just sort themselves out over time?