<prompt> Vitiligo is associated with the following exceptAddisons diseaseCrohns diseaseMEN syndromePernicious anemia  <response>: 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 