spider bite

(redirected from Spider bites)


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 ?
There have been no reported deaths in the UK resulting from false widow spider bites.
What to do with spider bites Bites from spiders in the UK are uncommon, but some native spiders - such as the false widow spider are capable of giving a nasty nip.
The effect of spider bites on humans is known for only a very few spider species in South Africa (SA), relative to the large number of species that occur in southern Africa and that very seldom come into contact with humans.
Spider bites are rarely deadly, but several species in North America are venomous, some more poisonous than others.
Happy Bird I had spider bites in Thailand that resembled this.
Lawrence Bee of the British Arachnological Society said no deaths from spider bites have ever been reported in the UK.
It's worth remembering that spider bites are extremely rare within the UK and are much less frequent than, for example, bee or wasp stings.
The finding has implications for understanding how these spider bites affect humans and for the development of possible treatments.
We had received cases before and we were, and continue to be, prepared to deal with any cases of spider bites.
40pm A clumsy teenager develops superhuman powers after a genetically engineered spider bites him.