杨某，男，19岁，1997年8月因左足第2趾外伤诊断为“左足第2趾软组织挫裂伤”，予TAT皮试强阳性而脱敏注射。第一次脱敏注射0．1ml后2min出现腹痛，全身冷汗，呼吸急促，四肢冰冷，脉搏细弱，血压9／6kPa，呼吸28次／min，双瞳孔2mm，对光反射灵敏，在结膜充血，眼睑肿胀（因用 Yang, male, 19 years old, was diagnosed as “left foot second toe soft tissue laceration” due to the second left toe trauma in August 1997 and was strongly positive for the TAT skin test and desensitized. The first desensitization injection of 0.1ml after 2min appeared abdominal pain, body cold sweat, shortness of breath, cold limbs, weak pulse, blood pressure 9 / 6kPa, breathing 28 times / min, double pupil 2mm, sensitive to light reflection in the conjunctival hyperemia, Eyelid swelling (due to use