Yes, your TSH of 8.0 indicates an underactive thyroid (hypothyroidism), which commonly causes dry, itchy skin. However, your ESR of 80 is significantly elevated, pointing to active inflammation in your body. This could be due to an autoimmune thyroid condition like Hashimoto?s disease, or another underlying inflammatory issue. You should not start any medication without a prescription. Please consult your doctor or an endocrinologist promptly. They will likely order further tests, such as Free T4 and thyroid antibodies, to confirm a diagnosis, investigate the high ESR, and determine if thyroid hormone replacement therapy (like levothyroxine) is appropriate for you.