8 doctors weighed in:

What type of spider bite would cause swelling and pain in the localized area and also flu like symptoms?

8 doctors weighed in
Dr. Michio Abe
Internal Medicine
6 doctors agree

In brief: Bl. widow or br. rec

Spider bites are fortunately uncommon.
In many cases, presumed spider bites are actually due to another skin condition or an insect sting. The black widow spider and the brown recluse spider can cause the symptoms you describe. in addition to the local redness, irritation, and pain from the bite, these two spiders that are known to cause allergic reactions, which can present as flu-like symptoms.

In brief: Bl. widow or br. rec

Spider bites are fortunately uncommon.
In many cases, presumed spider bites are actually due to another skin condition or an insect sting. The black widow spider and the brown recluse spider can cause the symptoms you describe. in addition to the local redness, irritation, and pain from the bite, these two spiders that are known to cause allergic reactions, which can present as flu-like symptoms.
Dr. Michio Abe
Dr. Michio Abe
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4 comments
Dr. William Walsh
or hobo spider. Often the "spider bite" is not a spider bite but a small scratch that is infected. If you are having systemic symptoms I'd suspect a cellulits. Have it looked at, and refer them to http://www.nejm.org/doi/full/10.1056/NEJMra041184 - the article also points out that most "spider bites" are not spider bites at all.
Dr. David Wishnew
Do not forget that arachnid bites are also an envenomation. The venom itself causes tissue necrosis and can cause an allergic reaction. The erythema seen in the periphery of the bite is often just a severe inflammatory reaction, as opposed to an infection. These wounds often progress quickly to a black (necrotic) spot that can enlarge in both surface dimension as well as depth.
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