spider bite


Also found in: Dictionary, Thesaurus, Financial, Encyclopedia, Wikipedia.

spider

 [spi´der]
1. an arthropod of the class Arachnida.
spider bite in the United States, the two spiders whose bites are most likely to cause a serious reaction are the black widow spider(Latrodectus mactans) and the brown recluse spider(Loxosceles reclusa). Signs and symptoms are associated with the effects of injection of the venom and include pain at the injection site, weakness, muscle pain and cramps, elevated blood pressure, and restlessness. Bites by these spiders must be treated promptly and effectively. First aid is the same as that for a snakebite and includes the following:

1. Wash the wound with soap and water and apply a clean dressing.

2. Apply a constricting band between the area of the bite and the heart.

3. Keep the person calm and transport him to the hospital or medical facility as soon as possible.

4. If swelling becomes apparent, apply a cold compress to the area.
black widow spider Latrodectus mactans, a poisonous spider found in North America; see spider bite.
brown recluse spider Loxosceles reclusa, a poisonous spider found in North America; see spider bite.
vascular spider a telangiectasis due to dilatation and branching of superficial cutaneous arteries, which presents as a bright red central portion with branching radiations, the whole somewhat resembling the configuration of a spider. The lesions may occur singly or in large numbers, and may be nevoid or acquired, being commonly associated with pregnancy and liver disease. Called also nevus araneus, spider nevus, and spider telangiectasia.

spider bite

Etymology: ME, spithre + AS, bitan + L, potio, drink
a puncture wound produced by the bite by any of nearly 60 species of venomous spiders found in North America. Most spiders have fangs that are too short or fragile to penetrate the skin, but some are dangerous to humans. These include the black widow, Latrodectus mactans; the brown recluse, Loxosceles reclusa; and species of jumping spiders and tarantulas. Spider venom may contain enzymatic proteins, including peptides that may affect neuromuscular transmission or cardiovascular function.

spider bite

Punctures of the skin and/or envenomation by the fangs of a spider.
See: black widow spider; brown recluse spider
See also: bite
References in periodicals archive ?
That's because many abscessed soft-tissue infections are being blamed on spider bites, when actually they are the result of MRSA infection, Dr.
How come some spider bites get infected, but other bites don't?
FULL STORY: PAGE 11 A TERRIFIED mum has been rushed for medical help after a spider bite left her in agony.
PAULA RADCLIFFE has revealed a spider bite threatened to wreck her Olympic ambitions as she battled to recover from a thigh injury.
Graeme saw a tropical medicine specialist who diagnosed the injury as a camel spider bite.
It wasn't until I got to Ireland that I realised it was a spider bite as my wrist was swollen.
Although they may look similar, the spider bite is intensely painful.
A MUM has told of her terror after a spider bite left her suffering excruciating pain.
It was a spider bite or an ingrown hair,'' he said.
A TESCO worker was left in a coma from a suspected spider bite after handling goods from abroad.
Meanwhile a Barry resident believes her dog has been killed by a spider bite.