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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes White Round Circle With Burning Sensation After An Insect Bite?

How can I Identify my nightly bites. I believe it looks like from a recluse brown spider, but every one says they are not here near Milwaukee. The bite has a white round circle a smaller red circle and a tiny thing like a bubble. It starts burning after a while. An ice pack helps.
Mon, 22 Sep 2014
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Internal Medicine Specialist,  's  Response
Hi,

Thank you for your query. I can understand your concerns.
It seems to me that insect bite has caused a tiny blister surrounded by a red circle and further surrounded by a white circle. Red circle is due to erythematous reaction and due to capillary dilatation. White circle is a some kind of wheal due to exudation of fluid from capillaries and venules and thus compressing the soft tissue & decreasing the vascularity of the area. This kind of bulls eye patterns appear from the bites of Arachnids(spiders & ticks).
The skin reaction to insect bites usually lasts for up to a few days.







Regards

Dr. T.K. Biswas
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What Causes White Round Circle With Burning Sensation After An Insect Bite?

Hi, Thank you for your query. I can understand your concerns. It seems to me that insect bite has caused a tiny blister surrounded by a red circle and further surrounded by a white circle. Red circle is due to erythematous reaction and due to capillary dilatation. White circle is a some kind of wheal due to exudation of fluid from capillaries and venules and thus compressing the soft tissue & decreasing the vascularity of the area. This kind of bulls eye patterns appear from the bites of Arachnids(spiders & ticks). The skin reaction to insect bites usually lasts for up to a few days. Regards Dr. T.K. Biswas