Yes, there seems to be an allergic reaction.

起来有敏性反。

I think it's it's a collective anaphylactic immune response to an antigen that challenged the system.

我认为这对抗原集体敏性免疫反, 这种抗原挑战了系统。

In other words, sometimes a person might have no allergic reaction on the skin test, but have a localized allergic reaction affecting the nasal cavity and eyes - that's low sensitivity.

换言之，一个鼻子和眼睛局部存敏性反患者做皮肤点刺试验时可能出现假阴性结果，这就所谓低敏感性。