Postpartum Thyroiditis is a temporary or long-term Thyroid Disorder that affects women within 12 months after delivery. It usually begins as hyperthyroidism (Overactive Thyroid) and then shifts to Hypothyroidism (underactive thyroid). In some women, the thyroid may never recover fully without proper treatment. Up to 1 in 10 women experience thyroid issues after pregnancy but most cases go undiagnosed.