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What causes hot hands?

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Hot hands may be caused by hyperthyroidism or erythromelalgia. Hyperthyroidism is the result of an overactive thyroid gland that produces too much of the hormone thyroxine, according to Mayo Clinic. Erythromelalgia affects the peripheral nervous system and is genetically inherited, according to the National Institutes of Health.

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Hyperthyroidism is more common in women than men, and it tends to run in families. Graves disease, Plummer's disease and thyroiditis are all causes of hyperthyroidism. Other symptoms include but are not limited to sweating, swelling at the base of the neck, fatigue and heart palpitations. Treatment options include radioactive iodine, antithyroid medications, beta-blockers and surgery to remove most of the thyroid gland, as stated by Mayo Clinic.

Erythromelalgia is a condition that is caused by mutations in the SCN9A gene. Patients with this condition experience episodes of pain, redness and swelling in the hands and feet that are usually triggered by entering a warm environment or eating spicy food. Usually, the signs and symptoms of erythromelalgia appear in childhood and progress as the affected individual gets older. In some cases, the hands and feet may end up being constantly red as a result of a lifetime with the disease, as revealed by the National Institutes of Health.

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