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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Suggest The Cause For A Painful Red Ring Rash On Thigh And Arm?

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?
Mon, 13 Oct 2014
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Dermatologist 's  Response
Hello. Thanks for writing to us at healthcaremagic

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 drugs (cloxacillin or flucloxacillin). That would be good enough. It is a prescription drug, therefore, you must ask for a prescription of these from your physician.

Topically you may use an OTC topical antibacterial e.g 2% mupirocin cream, twice daily.

An OTC pain killer would provide you symptomatic relief from pain and swelling.

Regards
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Suggest The Cause For A Painful Red Ring Rash On Thigh And Arm?

Hello. Thanks for writing to us at healthcaremagic 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 drugs (cloxacillin or flucloxacillin). That would be good enough. It is a prescription drug, therefore, you must ask for a prescription of these from your physician. Topically you may use an OTC topical antibacterial e.g 2% mupirocin cream, twice daily. An OTC pain killer would provide you symptomatic relief from pain and swelling. Regards