Hi, When I was in middle school approximately four years ago, I fell from a chair and hit my head really hard on the edge of a desk. I had a lump the size of a golf ball. I had no symptoms of Brain Trauma and I didn't get it checked out. But recently I heard that, if not found soon, the damage could come back and effect me later in life. Is this True? If it is what should I do? Also what is this situation called, so I could do some research? Thank You Very Much. I really appreciate your help.
Sincerely,
John.