Thank you for this article. :)
By the way -- a wealth of information regarding Michael Jackson's vitiligo and lupus is most definitely out there. Most reporters/journalists fail to report the details, though, for a variety of reasons.
Below is a link to a collection of everything Michael Jackson and those who knew him ever said about his vitiligo and lupus (sourced for your convenience):
It includes various statements from medical professionals, court documents/testimony, accounts from his family members, Jackson's autopsy results, etc., etc. It also includes information on how Jackson treated both diseases, as well as information on his paternal aunt, whom also suffer from vitiligo.
There are also many photographs of Mr. Jackson without facial makeup available online: http://lacienegasmiled.wordpress.com/category/vitiligo-photos/
And photos of his malar rash (lupus): http://lacienegasmiled.wordpress.com/2009/11/28/michael-jackson-and-discoid-lupus/