too easily upset

I think you're being a little oversensitive - she didn't mean it as a criticism. 我认为你有点过于敏感了——她不是在批评你。

damaged, changed, or harmed by something that would not affect most people or things

People can become oversensitive to insulin and go into comas from low blood sugar. 人们可能对胰岛素会产生过度敏感，并因为低血糖而进入昏迷状态。