What is This Balding Bump on My Head?

I am currently having a lump/hump(elevated)on my head it’s circle in shape and around that bump is a bald area but inside that circle shaped hump has hair. What should I do sir? Is this some kind of a disease? Should I do something or wait for it to go away. I had this for nearly a year now and I’m still 15 years old. This was small at first but then it became bigger. I fear this can do something bad to my health. Please reply. I really need help. I went to the doctor but the medicine and lotion i received isn’t working. I think she had a wrong diagnosis. :)

thanks!

I really couldn’t begin to guess at what the lump is without an examination. It could be a variety of things, but there’s nothing that stands out to me by your description. If you’re not satisfied with your doctor’s diagnosis you should get a 2nd opinion from another doctor. It never hurts to double check!