《黄帝内经·灵枢·厥病》
真头痛，疼痛剧烈，如果整个头都很痛，手足冰冷到肘膝关节的，为不治之死证。
真头痛，头痛甚，脑尽痛，手足寒至节，死不治。
A true headache, severe pain. If your entire head hurts, and there is a chilliness in your limbs up to the elbows and knees, this is a terminal condition.