I’m bald ( ing ) and a while back I started properly shaving my head and noticed - after a head trauma and operation to remove the resulting lump, that there was a big patch following roughly what my hairline “was” that would not pigment - pure white ! I tan quite easily so it was , let’s say , quite striking ! This facilitated the near permanent use of a hat. I don’t know if it came about because of the head trauma or if it was stress or what - a dermatologist thought it might be vitiligo but after an initial consultation no further intervention was offered beyond a shampoo that didn’t work.
Recently for various reasons but mostly because I’m trying - I’ve been losing weight - down to near my correct weight of 86kg ( 93kg ) from well over 100kg - because of this and a slight reduction of stress ( I think ) my scalp seems to be slowly regaining its colour , I don’t “really” know if it’s the cross training , the stress thing or the diet which just consists of putting less crap in my body but obviously I’m just going to have to continue all three of those improvement factors
Just need my hair to grow back now