Kidney deficiency may cause back pain, but back pain is not necessarily due to kidney deficiency. Kidney deficiency caused by low back pain, the symptoms of low back pain hidden, continuous, like to rub and like to press, leg and knee weakness, more severe in the event of labor, lying down is to alleviate, often recurring episodes. For those with kidney yang deficiency, it can be seen as constriction of the abdomen (discomfort of traction in the lower abdomen), white color (white and lack of luster), coldness (fear of cold), cold limbs, lack of energy, light tongue, thin white moss, thin pulse; for those with kidney yin deficiency, it can be seen as heartburn, insomnia, dryness of the mouth and throat, flushing, heat of the heart of the hands and feet, red tongue with little moss, and a thin pulse (the pulse is becoming narrower and thinner and the rate is accelerated). If you have any of the above symptoms, it is recommended that you seek prompt medical treatment.