Let me tell you if look like you have a spider bit, let me tell you ther is a but in town is know as Methicillin resistant staph aureaus, or MRSA the lesions looks like a bug bite, but is not a bite,these lesions are painful and get filled with pus, you need to see a doctor, in the midtime, and this worked for me a lot, keep it clean covered with a clean or steril dressing and if is possible put some Vick Vapor Rub in it.