question: Hi, I m 21 years old, approximately 5 years ago a lump formed near the center of the crown of my head. I can see hair ceasing to grow there now. The lump is relatively painless just a slight discomfort when I put pressure on it, but is nearly as hard as bone. It s about a quarter size, sticking out no more than 10-15 centimeters. It had previously never caused me any problems so I was not concerned but now I ve been getting mild head aches and I can feel as if blood is rushing to that point sometimes, like a pulsating sensation. Any advice or information is much appreciated.