患儿,男,10岁,因右下颌淋巴结炎,服头孢氨苄胶囊0.5g/次、扑炎痛0.5g/次、VitC0.2g/次,均为3次/天口服,连服2天后,觉双手及双脚麻木、蚁走感、冰凉。查体 心肺腹未见异常,四肢远端对称性感觉障碍,呈蚁走感及手套、短袜套样分布,诊断为多发性神经炎,停药并加服VitB_620mg/次,3次/天,2天后其症状消失。后再次服头孢氨苄2次后又出现上述症状,经停药,加服 Pediatric, male, 10 years old, due to right mandibular lymphadenitis, serving cephalexin capsules 0.5g / times, puerarin 0.5g / times, VitC0.2g / times, were 3 times / day oral, and even served 2 days, Feel numb hands and feet, ants feel away, cold. Examination of physical and mental abdomen no abnormalities, limbs symmetry of distal sensory disturbances, ants walking sense and gloves, socks, like the distribution of diagnosed as polyneuritis, withdrawal and plus VitB_620mg / time, 3 times / day, 2 Days after the symptoms disappear. After taking cephalexin twice again after the above symptoms, the withdrawal, plus service