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apathetic hyperthyroidism

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia, Hutchinson 0.02 sec.
apathetic hyperthyroidism
[ap′əthet′ik]
a form of Graves' disease that tends to affect mainly older adults who have stereotyped "senile" physical features and whose behavior is apathetic and inactive rather than hyperkinetic. Medical treatment not only restores normal behavioral activity but also results in a loss of wrinkles and a more youthful physical appearance. Untreated, the patient is likely to succumb to the effects of stress or acute illness.

hyperthyroidism
excessive functional activity of the thyroid gland. Rare in animals except in aged dogs and cats where it is associated with functional thyroid neoplasms.
Affected animals show increased thirst, weight loss despite an increased appetite, restlessness and cardiac arrhythmias.

apathetic hyperthyroidism
a small percentage of hyperthyroidic cats show lethargy, depression and anorexia; may be due to associated dysfunction.

apathetic hyperthyroidism
Endocrinology A masked hyperthyroidism, more common in depressed older Pts Clinical Hypermetabolic state manifest by weight loss, CHF, supraventricular tachyarrhythmia


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One symptom or one clinical feature of thyroid disease in the elderly may be overwhelming in its presentation, as in apathetic hyperthyroidism, thyroid myopathy, and so forth.
We provide the details of this rarely documented presentation of apathetic hyperthyroidism with thyroid storm and coma and review the characteristics of similar cases in the literature.
 
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