Two days ago I was outside and I thought I

Patient: Two days ago I was outside and I thought I got bit by a mosquito but now The bug bite is getting bigger and it looks bad, it itches but when i scratch it hurts, it’s also peeling and when I scratch it I scratch around the actual bug bite. Don’t know what it can be, it’s very scary. What can it be?

Symptoms: Itching and burning on my arm

Doctor: