One strand of hair always grows pure white?
I'm in my 30s most would say well you're older that's why but I've had this every few years since I was 18 AND my mom and dad noticed the first grey in their mid 40s not at all in their 30s.
It's one strand on the left side of my head it just keeps growing white only the one it's annoying because I have brown black hair so it's so obvious and I don't like it.
Is it normal? What causes one only? Why?