On Friday at school, my ds who is in reception, feel off a bike, he was being pushed rather fast by one of his friends. He was fine though and had a very small red mark on his left cheek, anyway that was friday. This morning the cheek in question has gone red, looks a bit like a friction burn as if he had rubbed his face over rough carpet or something. Im confused as to why its happening now. Im sure it must be related but not sure whats happening. Any ideas? He is well in himself and no marks elsewhere.