How should I communicate my aims to my surgeon?

Thank you for your picture. I understand your concern for noninvasive treatments. Your facial asymmetry appear to be skeletal in nature. If any correction can be done it would require invasive procedures. To get the best set of options you would need to seek consultation from a plastic surgeon...

You are likely referring to what is known as forehead horns, a developmental upper forehead protrusion. They are often confused with osteomas which biologically they are not. Forehead horns can be successfully shaved down.

Your parents were correct in that trauma to the forehead/skull at a young age can be a nidus for bone formation. This results in a bone formation response which is as you have described it and can be seen in the lateral skull film. (the limited CT scan slices do to show the involved area) Such...