Bridget writes that this blister has led to antibiotic therapy and is extremely painful. She doesn't provide a species or a spider to look at, which leads me to the same place I always go. Unless the spider is caught in the act, odds are we're looking at some sort of staph or strep infection.
Bridget was right in seeking help for this blister. She hoped that sharing it would help others recognize when a blister is more than ill-fitting shoes. Thanks to her for sharing.
Have a spider bite you want to share? Submit a picture of your spider bite.
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