In traditional Chinese medicine theory, the cause of blood deficiency may be due to biochemical deficiencies such as spleen and stomach weakness, improper diet, and emotional disorders, or due to factors such as excessive blood loss and chronic diseases that cause continuous depletion and insufficient transformation of qi and blood, resulting in the deficiency of both qi and blood. It is also known as qi and blood deficiency or qi and blood deficiency. Patients generally exhibit pale complexion, palpitations and dreams, fear of cold limbs, fatigue and fatigue, dizziness and dizziness Symptoms such as dry claw nails may also include numbness in the hands and feet, as well as heat in the hearts of the hands and feet, which can affect the patient's daily life. In severe cases, it can lead to qi yin deficiency and yang qi deficiency.
在中医理论中，血虚的原因可能是脾胃虚弱、饮食不节、情绪不调等导致生化不足，或是由于失血过多、慢性疾病等因素引起气血不断耗损，并且转化不足，引起了气与血两者不足的现象，也被称为气血两虚或者气血亏虚，患者一般会表现为面色苍白、心悸多梦、畏寒肢冷、神疲乏力、头晕眼花、爪甲干枯等症状，还可能会出现手足发麻、手足心热等情况，对患者的生活造成影响，严重时会引起气阴两虚和阳气虚脱的现象。