Welcome to healthcare magic.
The pigmentation you describe can be due to Vitamin B12 deficiency
. You seem to be taking treatment for hypothyroidism, PCOD, and D3 deficiency, but not for B12 deficiency. First of all you need to find out why you got vitamin B12 deficiency. Pernicious anemia
, strict vegetarian diet, atrophic gastritis
, Inflammatory bowel disease
, Bowel surgery
and chronic antacid use are some of the causes. As you already have hypothyroidism which may be auto-immune it is better to rule out pernicious anemia which is another auto-immune disease and can be an association.Addisons disease is another autoimmune disease
which can cause pigmentation and elecrolyte imbalance which should be ruled out. It is better to consult a gastro-enterologist for ruling out pernicious anemia. Vitamin B12 deficiency can be treated with Vitamin B12 injections or tablets and in my experience tablets work just as well as injections. Daily dose of 500 microgram is sufficient. Foods rich in B12 are non vegetarian sources like meat, poultry, sea food, egg etc. If you are a vegetarian then have milk, yoghurt, cheese and cereal fortified with B12. With correction of B12 deficiency your pigmentation will improve if that is the cause. Avoiding excessive sunlight and sunscreens along with diet rich in vitamin C will also help. Hope this helped.