What is this?

I am worried that they may be completely damaged. I am going to the dr next week, but am very anxious for answers. Any advise for regrowth?

If I were your doctor, I would want to know much more, like your sex, when it appeared, did you do anything to bring it on (dying your hair, use a hair straightener), has it happened before, etc.. I would look at is with a hand microscope to see if there are ‘Exclamation hairs” present. Summing it up, I am happy to see that you are going to a doctor