Hyperthyroidism in the elderly is usually due to autonomous thyroid nodules, and in about 20% of hospitalised patients may follow a contrast radiography procedure. The more common clinical features of hyperthyroidism occur frequently as unrelated symptoms in the elderly so that the diagnosis is often not apparent, particularly in the presence of cognitive impairment. As the response to standard biochemical treatment is rewarding, screening of the elderly with thyroid function tests should be done routinely.
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Martin et al. (1996) studied this question.
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