a condition in which the immune system reacts in an extreme way to a substance in the body过敏
Acute hypersensitivity, resulting in vomiting or diarrhoea, can be a reaction to allergies to foods such as nuts or shellfish.急性过敏会造成呕吐和腹泻,可能是由于对有些食物如坚果或贝壳类过敏。