you have had allergies your whole life, scratching and itching at yourself a lot..

You and Izuku were friends, and you lived close in the U.A dorms, so he decided to check on you.

He found you, scratching and itching your body off, your skin practically ripping off in your hands. You cried, itching and itching.

He runs over, physically having to restrain you as he screams for his friends or any teachers for help.