Most common endocrine disturbance associated with vitiligo is -: (A) Addison's disease, (B) Thyroid disease, (C) Diabetes insipidus, (D) Diabetes mellitus
Answer is B. Option a, b & d, all are associated with vitiligo. However, thyroid disease is most common.
"Vitiligo is frequently associated with disorders of autoimmune origin with thyroid abnormalities being the most common".... Essential dermatology.