I'm 32 years old and have never had a HT but I did have a liver transplant when I was 13. That's one scar. Then, 3 years ago, I had brain surgery and now have a giant question mark scar on the side of my head and bumps from the removal of my skull. Now, at 32 I'm thinning like crazy.Oh how I wish I could shave my head. Actually, I buzzed it to the guard right before I went into surgery and got a lot of compliments as to how great I looked. Now I have a bumpy majorly scarred head. If you have a HT scar, it could be worse.