Anaphylactic allergic reactions can be fatal even when they start off with mild symptoms such as a tingling13 in the mouth and throat or gastrointestinal discomfort.

• 一种是给食物过敏的病人注射含有少量食物提取物，这种注射需要定期坚持很长时间，目的是使对食物过敏的病人脱敏。