Liver blood deficiency is the pattern name for the picture produced when the nourishing and moistening role attributed to the liver's stored blood is described as insufficient. In the classical framework the liver stores blood, opens at the eyes, manifests in the nails and governs the sinews, which is why the features are spread across vision, nails, limbs and menstruation instead of staying in one place.
They are: dizziness and dim or blurry vision, sometimes described as night blindness; dry, brittle or ridged nails; numbness, cramping or a tight stiffness in the limbs; scanty and pale menstrual flow, delayed periods, or absent periods; a lustreless complexion; unsettled sleep with many dreams; a pale tongue; and a fine pulse. The classical texts connect the picture to blood loss, to convalescence, and to a general failure of the sources of blood.
The modern conditions that can produce the same list include iron deficiency anaemia, vitamin A deficiency, vitamin B12 deficiency, hypothyroidism, and chronic blood loss from heavy periods or from the digestive tract. Numbness additionally carries a long differential of its own: diabetic neuropathy, cervical radiculopathy, multiple sclerosis and stroke are all capable of beginning as numbness.
Three of those are matters of hours or minutes rather than of pattern names. Sudden visual loss, loss of part of the visual field, or a new headache with tenderness over the temple and jaw pain on chewing can be giant cell arteritis, in which the loss of sight is permanent and the window is measured in hours. Numbness or weakness that comes on suddenly together with slurred speech or a drooping face is treated as a stroke. Absent periods are assessed for pregnancy first.
Whether the nourishing methods recorded for this pattern change any of those outcomes has not been established. This entry does not diagnose and does not recommend a treatment.
肝血虚是古典术语，指的是肝所藏之血的濡养与滋润作用被描述为不足。古典框架中肝藏血、开窍于目、其华在爪、在体合筋，因此本证的表现分散在目视、爪甲、肢体与经水，而不局限于一处。
记载中的表现包括：头晕目眩、视物模糊，或描述为夜盲；爪甲枯脆、有纵嵴；肢体麻木、拘急或抽掣；月经量少色淡、后期，甚或闭经；面色无华；睡眠不实而多梦；舌淡；脉细。古典文献把这一组表现与失血、病后失调、以及生化之源不足联系起来。
能产生同一份清单的现代情况包括：缺铁性贫血、维生素 A 缺乏、维生素 B12 缺乏、甲状腺功能减退，以及月经过多或消化道慢性失血。麻木另有一长串需要鉴别的可能：糖尿病周围神经病、颈椎神经根病、多发性硬化与卒中，都可以以麻木起病。
其中三类以小时甚至分钟计，不以证名计。突发视力丧失、视野缺损，或新发头痛伴颞部压痛、咀嚼时下颌乏力，可以是巨细胞动脉炎——其视力丧失不可逆，时间窗以小时计。突发麻木或无力并伴言语含糊、口角歪斜，按卒中处理。闭经先排除妊娠。
针对本证的补血之法是否改变上述任何一种结局，未被证实。本条不诊断，也不推荐任何处理。
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