常见面色苍白、四肢湿冷、出冷汗、头晕、恶心、心跳急速、脉搏细弱、呼吸表浅甚至昏迷不醒等症状，这些症状可能发生在昏厥之前或当中。

The symptom includes pale face, cold moist limbs, cold sweat, dizziness, nausea, rapid heartbeat, weak pulse, shallow breath, unconscious, etc. These symptoms may appear before or during the coma.

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像口误（slips of the tongue）、 头痛、背痛和其他疼痛、头晕、肌肉抽搐或抽动、痉挛性震颤等，都是完全健康者也可能发生的。

Slips of the tongue, headaches, backache and other pains, dizziness, light-headedness, numbness, muscle twitches, jerks, cramps, and tremors all occur in totally healthy persons.

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症状的发生中风麻木或虚弱，在面对，手臂，腿部(通常只在身体的一侧)，意识混乱，严重头痛，视力下降，头晕等。

Symptoms of an occurring stroke are numbness or weakness in the face, arms, or legs (usually only on one side of the body), confusion, severe headache, decreased vision, and dizziness.

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