The symptoms of spider bites can be diverse and vary in severity depending on the type of spider, location of bite and an individual's immune response to the venom. Spiders bites, whether they come from venomous or non-venomous spiders, can have...
House spiders belong to a species in the Tegenaria group, according to GreenNature.com. This species group includes the hobo spider, domestic and common house spider and the giant house spider. The hobo spider is the most dangerous in this group,...
The brown widow spider, or Latrodectus geometricus, is one of five widow spider species found in the United States. More than 30,000 species of spiders exist, but only a few can inflict a serious bite and produce venom harmful to humans, according...
The black widow is a poisonous spider found in most of the United States. This black or dark brown spider may grow to 1 1/2 inches in length; some species have a characteristic red hourglass underneath the abdomen. They generally live outdoors but...
The spider, according to "Dorland's Illustrated Medical Dictionary, 31st ed.," belongs to the species named arachnid. Characterized by a two-part body, the head and thorax section with eight legs and the abdomen or rear section, arachnids of many...
The female black widow spider is considered the most venomous spider in North America. The black widow can be identified by the distinctive hourglass shaped red marking on the abdomen. The venom of the black widow is a neurotoxin, meaning it...
The jumping spider is the most likely spider to bite a human in the United States, according to the California Poison Control System. Jumping spider is a name given to various species of spiders that jump or leap towards their prey. In order for a...
Although humans worldwide encounter many species of spider, only a few spiders present a threat. Two poisonous spiders are present in North America. The black widow spider and the brown recluse spider are both dangerous to humans and are found in...
Spider bites can cause pain and scary-looking sores, but in many cases, are not dangerous to the health. Bites from black widow and brown recluse spiders may cause serious harm in some people and may require professional medical care and...
The fiddleback spider is more commonly known as the brown recluse spider. This spider's name stems from the presence of a violin-shaped mark along its upper back. Though the fiddleback spider is not normally aggressive, it will bite a human in...
The black widow spider is a small, poisonous, eight-legged arachnid found in the Western hemisphere. The primary distinguishing feature of the black widow spider is a tiny, reddish, hourglass-shaped mark on its stomach. The black widow spider may...
The brown recluse spider and the black widow spider are dangerous to humans because their fangs can penetrate skin and inject poisonous venom. Brown recluse spiders have an upside-down violin-shaped marking down their backs and live only in the...
According to the Mayo Clinic, the majority of spider bites are not dangerous to humans. Brown recluse spiders, one of the few dangerous, common spiders in the United States, reside in the Southern states. While brown recluse spider bites often...
Black widow spiders are one of the few types of poisonous spiders in the United States. They usually reside in warm climates, including deserts and the Southeast. They are typically black in color with a red marking on their abdomen that resembles...
The brown recluse, also called the fiddle back spider, is a poisonous spider found in several regions of the United States. The most common place to find these spiders is the south central areas of the U.S., according to Medline Plus, a...
The brown recluse is an unassuming little spider with a potent venom that can cause serious illness to humans. Children, who often visit areas inhabited by the brown recluse, are at particular risk of a bite. The bite causes the skin and...
Brown recluse spider bites are poisonous but rarely fatal. Prompt medical treatment is necessary to avoid serious complications. The brown recluse spider can be found outdoors or indoors, usually in hidden areas. It generally only bites when it...
The black widow spider has found her way into American culture as a symbol of danger. However, this shy, unassuming shiny black spider with the red hourglass on her belly only bites when disturbed. Her bite can be lethal, though, and warrants...
Brown recluse spiders, also called violin spiders or fiddleback spiders, contain venom that can cause serious injury and death. According to The Ohio State University Extension, these spiders are found mainly in the central Midwestern states...
Black widows are typically considered the most venomous spiders in North America, according to "National Geographic." You can find them almost anywhere in the United States and North America, as well as some parts of Europe, Asia and Africa. If...
A black widow is a poisonous spider found in most regions of the United States. It is recognized by its shiny black body and signature red hourglass figure on the abdomen. Although it is rare for death to occur from a black widow bite, there are...
The brown recluse spider is one of two most common poisonous spiders found in North America. The other is the black widow. According to MedlinePlus, the brown recluse spider is found most commonly in the southcentral states in the United States....
All spiders have hollow fangs to inject venom into their victims---usually other insects---but in most species, the fangs are too short or too fragile to break human skin. The brown recluse spider and the black widow spider are among the very few...
The brown recluse spider is one of only a few spiders that can bite. Most species of spiders are poisonous, Children's Hospital of Pennsylvania states, but don't have fangs long enough to inject poison into skin. The brown recluse is sometimes...
Brown recluse spiders are sometimes called fiddleback or violin spiders because of the markings on their head and thorax. The spider has six eyes, arranged in pairs. The brown recluse spider is a native to the United States and found primarily in...
A black widow is one of several poisonous spiders that can be found in the United States. It can be characterized by a shiny black body and a red hourglass figure on its belly. A bite from one of these spiders can cause serious symptoms, and in...
Although most spiders don't pose a danger to humans, some-such as the black widow spider--may cause serious problems for those bitten by them. MayoClinic.com indicates that these spiders prefer warm, dry climates and are often found “in dry,...
Blisters form when friction, force or other factors separate the top layer of skin from the inner layers and the resulting space fills with clear fluid or blood, according to Sports Injury Clinic. Wart treatments, medication injections, brown...
The brown recluse is a spider commonly found in the woods, under leaves or piles of rocks. The brown recluse is poisonous, which means that it is a danger to people and animals. After a human is bitten, the wound site may become infected and the...
Spider bites can range from harmless to fatal, spiders themselves coming in many varieties. Learn more about spider bites in this health video.
Anaphylaxis is a reaction to an allergen or foreign body, usually food, bug bites or stings or a medication. Anaphylaxis can cause a rash, trouble breathing, wheezing and nausea. Learn more about the symptoms and treatments for anaphylaxis in...
