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Related to apathetic hyperthyroidism: thyroid crisis
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.
apathetic hyperthyroidismEndocrinology A masked hyperthyroidism, more common in depressed older Pts Clinical Hypermetabolic state manifest by weight loss, CHF, supraventricular tachyarrhythmia
Overactivity of the thyroid gland, presenting as heart failure, arrhythmias (such as atrial fibrillation), weight loss, or psychological withdrawal. This is more often a presentation of hyperthyroidism in older than in younger patients. Diagnosis is usually easier in the latter group because they present with the classic symptoms of hyperthyroidism. Synonym: subclinical h
See also: 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.
a small percentage of hyperthyroidic cats show lethargy, depression and anorexia; may be due to associated dysfunction.