Some of the pretty symptoms include: weight gain, breast tenderness, mood swings / PMS, growing fibroids, heavy and / or irregular cycles, painful periods and
occasionally endometriosis, infertility or subfertility, sometimes
autoimmune conditions such as Hashimoto's
thyroiditis.
Although extremely rare in dogs, circulating thyroid hormone autoantibodies (anti-T3 or anti-T4 antibodies) are
occasionally detected and also are believed to reflect a state of
autoimmune thyroiditis.