Vitiligo is an autoimmune condition that causes patches of lightened skin. Here’s how to tell it apart from other conditions with similar symptoms, including leprosy, melasma, and scleroderma.

Some studies suggest associations of the HLA-DR2 and -DR3 antigens with the tuberculoid form and the HLA-DQ1 antigens with the virchowian form of Hansen's disease [10]. There are several studies on ...