Hi, My 18 month old suffered from a subdural hematoma when she was hit with debri from a car that smashed into our neighbors fence. Now, it has been a year since her accident and we are still experiencing some problems with the side of the head where the surguery was perform. On her incision site a zit like bump appeared and had to be drained and the doctor had no explanation as to why this had occured and it has been about two weeks or longer and the spot has not heal and close up, there is a scab but it still drains pus at times so I wipe around the area with a lttle alcohol. Now before that, we experienced a similar situation when another area on her incision site opened up for what ever reason below the current area and would not close, however when we decided to go ahead with a small surgery to close the area it closed up and now a thin layer of skin covers that area. Does anyone has an explantion as to why this may be ocurring and what might be the cause.