Hormone treatments can cause weight gain, hot flashes, loss of muscle tone and osteoporosis.

激素治疗能导致体重增加，潮热，肌力减退以及骨质疏松。

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Narcoleptics suffer not only from sleepiness, but also from sudden loss of muscle tone that, in extreme cases, can cause them to collapse and remain frozen-fully conscious-for minutes at a time.

发作性睡眠患者不仅困倦嗜睡，而且还突发肌力失调。在一些极端的例子中，甚至引起虚脱和数分钟意识完全清醒地僵直发作。

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Narcoleptics suffer not only from sleepiness, but also from sudden loss of muscle tone that, in extreme cases, can cause them to collapse and remain frozen - fully conscious - for minutes at a time.

发作性睡眠患者不仅困倦嗜睡，而且还突发肌力失调。在一些极端的例子中，甚至引起虚脱和数分钟意识完全清醒地僵直发作。

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This is a condition that causes the sudden onset of sleep paralysis the loss of muscle tone that occurs when we sleep during waking hours, often as a result of strong emotions.

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