I'm interested to read this. I have a form of vitiligo called Leopard Skin caused by parasites. They basically destroy the pigment wherever they are, and it's horrible. No fixing it. I can't tan because it just looks worse.
The area of my neck over my thyroid is completely devoid of color. There is melasma all around it, but over the thyroid itself, it is stark white, like baby skin. The melasma has almost completely covered my face.
All I can do at this point is try to lighten the melasma with vitamin C serum applied twice daily. Other than that, I'm screwed. I truly wish Iodine could fix this, but since I'm not young anymore, and my skin is not regenerating like it used to, I doubt I will see it go away while I am alive.