Even if most spiders did bite, their fangs are too small or weak to puncture human skin. Their bites may leave itchy, red wounds that heal within a week or so. The spiders that do manage to bite through our skin and insert toxic venom can cause serious health complications.
Spider bites often take longer to heal than other insect bites, and they may affect skin tissues. In some cases, you can treat spider bites at home. For nonvenomous spider bites, follow these steps:. The brown recluse is about 1 inch long and usually nonaggressive. It typically hides in dark, secluded spaces. The bite can blister and grow progressively worse without treatment to the point where it may kill surrounding tissue and cause fever, chills, and headache.
Your doctor will examine the bite and prescribe antibiotics. The black widow spider is shiny and black with a distinct, reddish, hourglass-shaped mark on its belly. Found mostly in the warm Southern and Western United States, the black widow stays in secluded spaces such as:.
Only the female black widow is toxic. Prompt treatment is best , especially in children and older adults. In some cases, a healthcare provider will prescribe antivenom to remove the venom from your body.
Hobo spiders are common in the Pacific Northwest. They sit up high on long legs and run fast. Hobo spiders lurk:. After 1 hour, the site will start to turn red.
After 24 to 26 hours, the wound may discharge fluids and eventually turn black. Hobo spider bites are slow to heal. Southwestern states with desert climates host tarantulas, but tarantulas may also be found as far east as the Mississippi River. They tend to hide under:. Their bite will feel like a bee sting. The area will become warm and red.
The Brazilian wandering spider is native to Central and South America. It moves quickly and aggressively. It can grow up to 5 inches long. The bite of a Brazilian wandering spider is extremely painful. It can quickly result in heavy sweating and drooling. After a few days, the skin will curve downward and appear blue.
You may also experience flu-like symptoms like fever or vomiting. You will find brown recluse spiders in the Central and Southern United States. They live outdoors and indoors. Some believe that hobo spider venom has similar skin-decaying effects to a brown recluse, but this is disputed. This is a large house spider with long legs that can run quickly. This is a small indoor spider with a hairy body. It can jump and lives near windows. Bites are not harmful unless you are allergic to the venom.
Wolf spiders are brown like the recluse but do not have the ornamental violin shape on their heads. These spiders are not harmful to humans. You may encounter them indoors and can release them outside. Tarantulas have venom, but it does not generally affect people unless you are allergic to it. You may feel a bit of stinging and have slight swelling following a bite.
Follow first-aid guidelines and see a doctor if you have a tarantula bite. These spiders hunt at night. They do not have venom, but their bites can hurt. Therefore, serious symptoms are minimal. Most spider bites are harmless, and symptoms will go away after a few days.
Seek immediate medical care if you suspect a black widow or brown recluse spider bite. If you have life threatening symptoms, the bite gets worse, or you have an allergic reaction, seek medical care right away. Get the basics on home remedies for spider bites. Discover natural remedies, which spiders are venomous, when to seek prompt medical treatment, and…. Most spiders are harmless, but that doesn't make them any less creepy. Learn how to spot venomous spiders, get rid of spiders, and prevent an….
Some spider bites can lead to serious complications if left untreated. Arachnophobia, or a fear of spiders, is an intense and overwhelming response to arachnids. A mental health professional can help you work through this…. If you have swelling in just one eye or have found a spider in the area where you were bit, it's safe to assume a spider or similar bug is to blame.
Learn how to safely and quickly remove a leech, as well as how to recognize a leech and when to seek immediate medical treatment.
Termites feed off wood and live in dark environments. A noticeable bug bite is more likely to be from a different insect, but here's what you can look…. If you share a bed with your pets, you may find black specks called "flea dirt. Health Conditions Discover Plan Connect. Medically reviewed by Deborah Weatherspoon, Ph. When to get medical treatment First aid Treatment Most dangerous spiders in the U. Summary Spider bites are common, and most do not require any medical treatment.
Lingering or worsening symptoms may be a sign of infection and require the care of a doctor. When to go to the hospital for a spider bite. First aid for a spider bite. Medical treatment for a spider bite. Spider bites can cause redness, pain and swelling, or you might not notice them at all. Many other bug bites and skin sores cause redness, pain and swelling. So unless you actually saw a spider bite you, it's difficult to be certain that your wound was caused by a spider.
Worldwide only a few species of spiders have fangs long enough to penetrate human skin and venom strong enough to hurt humans. Among these are widow spiders, with about 30 species, and recluse spiders, with more than species worldwide. Typically, a spider bite looks like any other bug bite — a red, inflamed, sometimes itchy or painful bump on your skin — and may even go unnoticed. Harmless spider bites usually don't produce any other symptoms.
Bites from some spiders, such as widow spiders and recluse spiders, might cause serious signs and symptoms. Severe spider bite symptoms occur as a result of the venom that the spider injects.
Symptom severity depends on the type of spider, the amount of venom injected and how sensitive your body is to the venom. Risk factors for spider bites include living in areas where spiders live and disturbing their natural habitat. Widow spiders and recluse spiders like warm climates and dark, dry places. Widow spiders can be found throughout the United States, except Alaska, and are more common in the rural South.
They're also found in Europe. They are more active in the warmer months and prefer to live in:. Recluse spiders are found most commonly in the southern half of the United States and in South America, where they are known as brown spiders. These spiders are so named because they like to hide away in undisturbed areas.
They are most active in the warmer months. Indoors, they prefer to live:.
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