is hashimoto disease hereditary
1 Thyroiditis is an inflammation of the thyroid gland. 2  This can lower the amount of hormones produced. 3  Hashimoto's thyroiditis is a painless disease of the immune system that is hereditary. 4  Postpartum thyroiditis occurs in 5 percent to 9 percent of women after giving birth. This can lower the amount of hormones produced. 2  Hashimoto's thyroiditis is a painless disease of the immune system that is hereditary. 3  Postpartum thyroiditis occurs in 5 percent to 9 percent of women after giving birth. 4  It is usually a temporary condition.