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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What causes a patch surrounded by red whelps on skin?

I have a friend who thinks and drs have told him it was a spider bite. This happened on February 28 2017. But he had taken antibiotics and it s only spreading out rounder with red helps around the outer part of it. But just gets bigger. Is it a spider or shingles or what. He is 71 and need to figure this out. Thank you!
Thu, 29 Jun 2017
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Internal Medicine Specialist 's  Response
He will need the lesion to be biopsied if the wound is not healing for more than two weeks, spider bite will generally start healing after a week and antibiotics are rarely needed unless the wound is infected.
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What causes a patch surrounded by red whelps on skin?

He will need the lesion to be biopsied if the wound is not healing for more than two weeks, spider bite will generally start healing after a week and antibiotics are rarely needed unless the wound is infected.