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A number of spiders can cause spider bites that are medically important. Almost all spiders produce venom but only a few are able to cause significant harm to humans. [1] Two medically important spider genera have a worldwide distribution—Latrodectus and Loxosceles. Others have a limited distribution.
The spider bites that experts really worry about are bites from venomous spiders, particularly black widows and brown recluse spiders. A bite from one of these types of spiders can cause severe ...
A venomous spider bite (like this brown recluse bite) can cause a red or purplish rash radiating from the site of the bite. There are only a few species of spiders in the U.S. that can bite humans.
Spider bites may be overdiagnosed or misdiagnosed. [1] In many reports of spider bites it is unclear if a spider bite actually occurred. [7] Historically a number of conditions were attributed to spider bites. In the Middle Ages a condition claimed to arise from spider bites was tarantism, where people danced wildly. [8]
“In general, spiders will bite only if they can’t get away from you, or are protecting their babies and don’t want to leave the babies behind, and/or they are being crushed or otherwise hurt ...
About 75% of "wet" bites will have localized pain and nothing more. [1] If, however, there is a substantial dose, a bite can cause latrodectism. The main symptoms are generalized muscle pain, stomach cramps, nausea and vomiting. [2] [3] Initially a pinprick or burning sensation can be felt when bitten by widow spiders. If there was enough venom ...
These types of bites are rare, but brown recluse, black widow, and hobo spider bites can be deadly, so if you suspect one bit you, seek medical treatment immediately. You may need antibiotics ...
It is a common misconception that P. phalangioides is incapable of biting humans due to an inability of their fangs to penetrate the human epidermis. These spiders can bite humans since their fangs are roughly 0.25 mm long, while the thickness of the human epidermis is less, around 0.1 mm thick; however, there are hardly any reports on bites ...