Am I the only one that knows that vitiligo is not only hereditary but can be caused by environmental causes?

*Sighs* Were you Michael's doctor? Did you diagnose him with vitiligo? Did you treat him for it and find out the EXACT cause of his vitiligo? Yeah, i doubt it. So stop being ignorant. The man's dead, just let it be. I'm sick of people putting his life up for debate, this is ridiculous.