Spider bites

Bullae caused by insect bites
Parasitophobia specimens
Bites on ankles

In Europe spider bites rarely cause problems, but sometimes noxious species arrive in consignments of tropical fruit. The patient shown had been bitten by a spider the day before leaving Nigeria and developed a painful necrotic lesion.

Bites from the European tarantula are painful but otherwise harmless.

In tropical and subtropical countries venomous spiders inject neurotoxins that can be fatal. The "black widow" (Latrodectus mactans), "fiddleback" (Loxosceles veclusa), and Atrax species of Australia are better known examples. Scorpions cause severe local and systemic symptoms as a result of stings (not bites).

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