My 3 year old had a finger infection a few weeks ago. It was a pus filled blister on the top of his finger and redness half way down his finger. Our GP took out the pus and DS had antibiotics for a week. The blister has cleared up and there is no pain . However the finger is still red ( not swollen). It has been a week since he finished the antibiotics and the redness is still there. He can move finger as normal etc. I am not sure if the redness will just go away in time or if I should take him back to the GP. Any advice would be appreciated, thank you