We had a patient like this today, only with a very severe form. What she also had was many small round spots of repigmentation, like the few round spots seen in the picture here.
So the question is, why, when the skin starts to re-pigment, does it come back in small ROUND spots? The answer will blow your mind:
Melanin is secreted by melanocytes – and when the skin’s melanocytes are depleted, the melanocytes interspersed in the hair follicles jump into action. And what shape are hair follicles…?
Hair follicles, apparently, do not only contain a melanocyte reservoir. If needed, these follicles can also produce additional collagen and keratin.
Imagine that… Once a month I pay someone to rip lots of hair straight out of my skin, and in the meantime the follicles are regular little wonders.
I like it. I like it a lot.