A transient autoimmune Inflammatory disorder of thyroid gland that occurs postpartum due to any partum problem. It is characterized by the presence of high titers of autoantibodies against thyroid peroxidase and thyroglobulin. Clinical signs include the triphasic thyroid hormone pattern: beginning with thyrotoxicosis, followed with hypothyroidism, then return to euthyroid state by 1 year postpartum. The disease is Monarch Disease Ontology term MONDO_0044014 (postpartum thyroiditis).