The thyroid gland produces hormones that regulate metabolism, energy production, body temperature, and numerous organ functions. Thyroid disorders include hypothyroidism (underactive thyroid causing fatigue, weight gain, cold intolerance), hyperthyroidism (overactive thyroid causing anxiety, weight loss, heat intolerance), thyroiditis (inflammation), nodules, and occasionally thyroid cancer. These conditions are diagnosed through combination of physical examination, blood tests measuring thyroid hormones (TSH, T4, T3) and antibodies, and sometimes imaging studies or biopsy for structural abnormalities. Proper management is important as thyroid dysfunction affects virtually every body system, impacting energy, weight, heart function, digestion, mood, and overall quality of life. Treatment for hypothyroidism involves hormone replacement (levothyroxine), while hyperthyroidism may require anti-thyroid medications, radioactive iodine, or occasionally surgery. Thyroid conditions require ongoing monitoring and medication adjustments, making access to care important for travelers with known thyroid disorders. Mexican endocrinologists typically provide comprehensive evaluations including laboratory testing and ultrasound if needed, with prescription medications available at significantly lower costs than in the US. For travelers experiencing new thyroid symptoms, prompt evaluation can identify conditions requiring treatment before they affect travel plans.

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