With treatment, patients with Hypothyroidism can live a normal life.
Yes, if you undergo a thyroidectomy due to Hashimoto's thyroiditis, you will still have the autoimmune condition. The surgery removes the thyroid gland, but Hashimoto's is an autoimmune disorder that can persist regardless of thyroid removal. Patients will likely require lifelong thyroid hormone replacement therapy after the surgery and should continue monitoring for other autoimmune conditions.