An abnormally high sensitivity to certain substances, such as pollens, foods, or microorganisms.Common indications of allergy may include sneezing, itching, and skin rashes.

• 过敏性反应对某些物质的不正常的极度敏感，如花粉、食品或微生物。常见过敏症状包括喷嚏、痒痛和皮疹