《黄帝内经·素问·刺腰痛》
治疗时应刺足少阴肾经在内踝上两次，若在春季则不要刺出其血，如果出血太多，就会导致肾气损伤而不易恢复。
刺少阴于内踝上二痏，春无见血，出血太多，不可复也。
To treat this, puncture the foot Shaoyin kidney meridian on the inner ankle in two places. If the treatment is administered in the spring, do not drain the blood. If too much blood is drained, it will damage the kidney qi, making it difficult to recover.