《黄帝内经·灵枢·厥病》
真心痛，发作的时候手足冰冷，直至肘膝部位，心痛极其严重，经常是早上发作到晚上就死亡，或者晚上发作早上就死亡了。
真心痛，手足清至节，心痛甚，旦发夕死，夕发旦死。
True heart pain, when it occurs, the hands and feet are cold, all the way to the elbows and knees; the heart pain is extremely severe. Death often occurs from the onset of pain in the morning until evening, or from evening until morning.
<s>[INST] Kindly elucidate the central themes in this passage in English: 真心痛，手足清至节，心痛甚，旦发夕死，夕发旦死。 [/INST] True heart pain, when it occurs, the hands and feet are cold, all the way to the elbows and knees; the heart pain is extremely severe. Death often occurs from the onset of pain in the morning until evening, or from evening until morning.</s>
Kindly elucidate the central themes in this passage in English: 真心痛，手足清至节，心痛甚，旦发夕死，夕发旦死。
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True heart pain, when it occurs, the hands and feet are cold, all the way to the elbows and knees; the heart pain is extremely severe. Death often occurs from the onset of pain in the morning until evening, or from evening until morning.
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