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What is Vitiligo is associated with the following except and explain in detail?
VITILIGO 

Acquired autoimmune disorder characterised by hypomelanosis of skin and hair together with the development of white macules with an absence of melanocytes on microscopy.

 Associations:-

Autoimmune diseases including hyperthyroidism, adrenocortical insufficiency, alopecia areata,MEN syndrome and pernicious anaemia