冷顫(英語:Shivering)是恆溫動物因早期失溫症、感到寒冷的原因而做出的身體反應。[1]當核心體溫下降時,身體就會開始打冷顫以維持身體機能的穩態。人在發燒時,因身體感到寒冷,有時也會打冷顫——發燒期間,下丘腦會將體溫調定點的溫度升高,致使身體開始發熱的同時,在體溫未升到體溫調定點前患者依然會感到冷。

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