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You could have giant cell arteritis. You should have CRP and ESR in the blood checked. If so, you should have oral corticosteroid and have a biopsy of the temporal artery.
Can you attach your photos here? Did you have thyroid function in the blood checked? How tall are you? How much do you weigh? How much do you gain weight? Over the what period of the time did you gain weight? Any other medical problems? Any surgeries? Any medications including over-the-counter pills and herbs? Any family medical history? Is your stress increased at home or work just before your symptoms started?