中医认为人有九窍，包括头部七窍（眼孔2、鼻孔2、耳孔2、口1）加前后二阴共九个孔窍。头部七窍又被称为“上窍”或“清窍”，而前后二阴则称为“下窍”或“浊窍”。
我不明白他的举止为什么那么奇怪，现在可一清二楚了，他对这一门根本就一窍不通。
I did not understand his strange behavior, but now it is clear as the sun at noonday; he is insane on that subject.
同时认为，本病常有水湿与瘀血的停滞，故清利湿热、化瘀软坚之祛邪利窍法亦为颜教授所习用。
He also considered that the disease often accompanied with stagnation of damp and blood, so that clearing damp - heat, re-moving blood - stasis and softening mass were used conventional-ly.
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