《黄帝内经·灵枢·海论》
血海邪气亢盛，就会觉得自己身体胀大，郁闷不舒，但也不知道是什么病；血海不足，总是觉得自己身体狭小，意志消沉，但是也说不出患了什么病。
血海有余，则常想其身大，怫然不知其所病；血海不足，亦常想其身小，狭然不知其所病。
When the evil qi in the sea of blood is strong, people will feel that their bodies are swollen and depressed, but they don't know what the disease is. If the sea of blood is not enough, people will always feel that their bodies are small and have low will, but they can't tell what disease they have.