spider bite

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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

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 classic literature ?
The bird-catcher who had laid this snare was no human being, but a venomous spider, peculiar to that country, as large as a pigeon's egg, and armed with enormous claws.
warned the film posters as David Arquette and Scarlett Johansson headed this action comedy about venomous spiders who become super-sized overnight after being exposed to a chemical spill.
His response might seem irrational but when you read that the country harbours ten of the most venomous spiders, he can be excused for over-reacting.
Brown also wasn't afraid to round up troublesome raccoons, skunks, snakes, venomous spiders, possums and many other wild animal species when called upon.
by Times News ServiceThe year 2017 saw a 25 per cent decrease in the number of people who were bitten by venomous spiders and scorpions.
Adam Leonard, from Advance Pest Control, said he was increasingly being called to remove the venomous spiders from people's homes across the city.
The most venomous spiders known in the world are from a few of the seventy or so families in which arachnids are classified.
The introductory chapters also dispel the two great Australian spider myths--firstly, that Daddy Long-legs spiders are the most venomous spiders in the world, but because their fangs cannot penetrate human skin humans are miraculously safe; and secondly, the old chestnut that the bite of a White-tailed spider can cause necrotic wounds that do not heal, supposedly requiring limb amputation or skin grafts.
A HORRIFIED mum peeled an Asda banana and unleashed a cluster of the world's most venomous spiders.
A HORRIFIED mum has told how she peeled an Asda banana and unleashed a cluster of the world's most venomous spiders.