Thanks for posting your query.
Vitiligo is an autoimmune disease
and because of autoimmune destruction of melanocytes, patient develops white patches.
These vitiligo patches are also associated with other disease such as diabetes mellitus
, hypothyroidism, pernicious anemia, autoimmune hepatitis
and other autoimmune disease.
You should consult with dermatologist
and go for appropriate medicine as soon as possible.
Get well soon,
Dr. Mayank Bhargava