一位甲狀腺功能亢進的病人，哪項評估結果最令人擔憂？

核心概念：甲狀腺功能亢進（Hyperthyroidism）的嚴重併發症：甲狀腺風暴（Thyroid Storm）。 為何正確答案對： C. 甲狀腺風暴是一種危及生命的代謝緊急狀態，其特徵包括極度亢進的甲狀腺激素作用，常表現為高燒（Temperature of 103°F / 39.4°C 或更高）、心搏過速（Tachycardia，心率常>140 bpm）、心律不整、意識混亂、噁心嘔吐、腹瀉等。高燒是甲狀腺風暴的關鍵指標之一，一旦出現，代表病情極為危急，需要立即緊急處理。 為何其他選項錯： A. 體重減輕（Weight loss）是甲狀腺功能亢進的常見症狀，由於代謝率升高，身體消耗能量增加，因此體重下降。 B. 食慾增加（Increased appetite）也是甲狀腺功能亢進的常見症狀，儘管吃得多，但由於代謝旺盛，體重仍可能減輕。 C. 手部細微顫抖（Fine tremors of the hands）是甲狀腺功能亢進的典型表現，反映了交感神經系統的過度活躍，但相較於高燒，其危急程度較低。

Core concept: thyroid storm, the serious complication of hyperthyroidism. Why the correct answer is right: C. Thyroid storm is a life-threatening metabolic emergency characterized by extreme exaggeration of thyroid hormone effects, typically presenting with high fever (temperature of 103 degrees F / 39.4 degrees C or higher), tachycardia (heart rate often > 140 bpm), dysrhythmias, altered mental status, nausea, vomiting, and diarrhea. High fever is one of the hallmark indicators of thyroid storm; its appearance signals an extremely critical condition requiring immediate emergency management. Why the other options are wrong: A. Weight loss is a common symptom of hyperthyroidism due to increased metabolic rate and elevated energy expenditure. B. Increased appetite is also common in hyperthyroidism; despite increased intake, the elevated metabolism still results in weight loss. D. Fine tremors of the hands are a typical manifestation of hyperthyroidism, reflecting sympathetic nervous system overactivity, but they are less acutely dangerous than high fever.