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Loxoscelism (/ l ɒ k ˈ s ɒ s ɪ l ɪ z əm /) is a condition occasionally produced by the bite of the recluse spiders (genus Loxosceles).The area becomes dusky and a shallow open sore forms as the skin around the bite dies ().
Bites most often occur as a defense when the spider is trapped against the skin, in clothing, for example. [8] The total volume of venom is minute (only 2 micrograms injected out of 4 microliters in the venom glands). [17] The bite of a recluse spider can generally be categorized into one of the following groups: [8]
While the majority of brown recluse spider bites do not result in any symptoms, cutaneous symptoms occur more frequently than systemic symptoms. In such instances, the bite forms a necrotizing ulcer as the result of soft tissue destruction and may take months to heal, leaving deep scars. These bites usually become painful and itchy within 2–8 ...
Bedbugs often leave bites in a line, a sign that experts sometimes call a “breakfast, lunch and dinner” pattern, Dr. Benjamin N. Ungar, director of the Alopecia Center of Excellence and ...
The family was first described by Eugen von Keyserling in 1880, [3] and treated as a subfamily and synonym of "Loxoscelidae" in 1893, [7] though this violates the rules of the International Code of Zoological Nomenclature; the publication of Sicariidae in 1880 predates the publication of Loxoscelidae in 1893, and the older name therefore has ...
Cutaneous loxoscelism results from serious bites causing a necrotising skin ulcer in about 50% of bites [12] with destruction of soft tissue and may take months, and rarely years to heal, leaving deep scars. The damaged tissue will become gangrenous black and eventually slough away. Initially there may be no pain from a bite, but over time the ...
The Centers for Disease Control [45] blamed the hobo spider in three reports of necrotic "bites" in the Pacific Northwest of the United States between 1988 and 1996. Studies performed by arachnologist Darwin Vest reported that this spider's venom caused significant necrotic effects in laboratory animals.
Sicarius is a genus of recluse spiders that are potentially medically significant to humans. It is one of three genera in its family, all venomous spiders known for a bite that can induce loxoscelism.