Editing Human skin color (section)

==== Vitiligo ====
[[File:P. Sathasivam.jpg|thumb|200px|Former [[Chief Justice of India]], [[P. Sathasivam]], has vitiligo.]]
[[Vitiligo]] is a condition that causes depigmentation of sections of skin. It occurs when melanocytes die or are unable to function. The causes of vitiligo are not clear, but research suggests several possibilities, including [[autoimmunity|autoimmune reactions]], [[genetic variation|genetic make-up]], [[oxidative stress]], and neural or viral causes.<ref name="halder">{{cite journal |last1=Halder |first1=RM |last2=Chappell |first2=JL |title=Vitiligo update |journal=Seminars in Cutaneous Medicine and Surgery |volume=28 |issue=2 |pages=86–92 |year=2009 |pmid=19608058 |doi=10.1016/j.sder.2009.04.008|doi-broken-date=19 January 2025 }}</ref> The incidence worldwide is less than 1%.<ref name=pmid7977362>{{cite journal |title=Genetic epidemiology of vitiligo: multilocus recessivity cross-validated |journal=American Journal of Human Genetics |volume=55 |issue=5 |pages=981–90 |year=1994 |pmid=7977362 |pmc=1918341 |last1=Nath |first1=S. K. |last2=Majumder |first2=P. P. |last3=Nordlund |first3=J. J.}}</ref> Individuals affected by vitiligo sometimes suffer psychological discomfort because of their appearance.<ref name=LivCol />