What Is Excimer Laser Therapy and How Does It Treat Vitiligo? Dr Sajjas Clinic in Tirupati Speaking of Vitiligo Chemicals can cause vitiligo and make it worse Update on the pathogenesis of vitiligo Anais Brasileiros de Dermatologia (Portuguese) Vitiligo is a genetic autoimmune disorder. BUT there are triggers in our environment that cause those genes to express. Managing the condition is possible once the genes are expressed. People with vitiligo