Did MJ's vitiligo start getting worse during Victory Tour?

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I'm pretty sure there's a pic in the Jacksons Live booklet that has the early signs on his neck or arms, I can't remember.

My friend had alopecia and it completely ruined her confidence and cheeky personality - I'd imagine this would be ten times worse, as your hair can often grow back.

Yeah, he did all he could to hide the vitiligo and it does seem it was going on before Thriller.