<human>: Painful skin rash on the arm. Could it be a spider bite?I have what I think is a spider bite on my thigh. It s a red ring, about 1.5 inches in diameter. It s raised and hard in the center with what looks like a white speck right in the middle. It s been there a couple of days and is painful to the touch and just a little sore. What do you think it may be?
<bot>: Hello. Thanks for writing to us at Chat Doctor Seems like it is bacterial infection of the skin, since it is sore and probably has a central pus point. Spider bites are different, burning is a prominent feature in spider bite, and they usually do have some itching, as well. If you were one of my patients I would have treated you empirically with an oral antibiotic; one from penicillin group of Chat Doctor.  That would be good enough. It is a prescription 