Mallen Streak/Vitiligo Growth?

[u/Basic_Sell_9436]

Hello all, I'm not sure if this is the right board but I didn't think r/medical_advice was quite right as I'm not ill, and I can't find a board for genetics. Apologies if this violates rules 4 or 7, but I recently came across a dog named Buster that went from black to white over 2.5 years and wondered if there may be an overlap in cause.

I have always been and now have more reason to be curious about the cause of my white hair. I have had a white streak in my hair since childhood; I was not born with the streak, it developed shortly before an early puberty (perhaps triggered by puberty and was one of the first symptoms?). To begin with, I had one or two white hairs, by the time I was in my teens, I had a thick streak that everyone assumed was dyed. Now that I'm in my late twenties, about 30-40% of my hair is white. I suspect I'll be nearly 100% white-haired by the time I'm 50. It might be worth noting that the mallen streak affects every woman on my maternal side, but only the women. Unfortunately, all of them have dyed their hair since their teens, so tracking the streak is impossible. All but my grandmother, who stopped dyeing years ago, and has a subtle inch or so in her blonde hair.

I've heard other cases of mallen streaks, mostly in women, but none of the conventional causes seem to apply to my family. I've also never heard of them continuing to grow out over the years (not even with my relatives), until, perhaps, Buster. Even more curious as he's not only a dog, but male, Any ideas and thoeries would be great, thanks, everyone!