指津血虛少。《素問(wèn)·脈要精微論》:“腎脈搏堅(jiān)而長(zhǎng),其色黃而赤者,當(dāng)病折腰;其軟而散者,當(dāng)病少血,至令不復(fù)也?!?a target="_blank" href="/zhongyi/zy53246cl/">王冰注:“腎主水,以生化津液,今腎氣不化,故當(dāng)病少血,至令不復(fù)也?!?/p>