Childhood Skin Problems Photo courtesy of CDC Brown recluse spider bites often go unnoticed initially because they are usually painless bites. Occasionally, some minor burning that feels like a bee sting is noticed at the time of the bite. Symptoms usually develop 2-8 hours after a bite. Keep in mind that most bites cause little tissue destruction. Initially the bite site is mildly red and upon close inspection may
reveal fang marks. Within a few hours, the redness gives way to pallor with a red ring surrounding the area, or a "bull's-eye" appearance. The lesion will often appear to flow downhill over the course of many hours. The center area will then often blister, which over 12-48 hours can sink, turning bluish then black as this area of tissue dies. Read more about the treatments
for brown recluse spider bites.Image Source
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Article: Brown Recluse Bite Treatment
Picture of Brown Recluse Spider Bites
A brown recluse spider is a venomous spider that has a violin-shaped marking on its head. The spiders are most common in the Midwest and the South. Brown recluse spider bites are often painless, which can lead to a delay in treatment. Within hours of a bite, redness and a 'bull's-eye" rash may appear. In the ensuing ensuing hours, the tissue at the center of the bite may begin to sink, form an ulcer, and die. This so-called necrotized tissue has a blue-black appearance. The majority of brown recluse spider bites do not cause significant tissue damage.
Image Source: Medscape - Photo by Thomas Arnold, MD
Text Reference: OSHA Fact Sheet: "Brown Recluse Spider."