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We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions. The brown widow originated in the southern hemisphere and is found in warm climates. In the U.S., it was initially only seen in Florida, but by 2003, had spread across the southern states to California. Mildei are relatively harmless and painless—you may not even realize you have been bitten. The hobo spider (Eratigena agrestis) has a bad reputation for its alleged flesh-eating venom. However, according to scientists at Utah State University, these reports are unfounded.
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Spider bites are usually harmless but can lead to pain, redness, and swelling. A wolf spider bite is similar to a pin-prick or bee sting. It may cause temporary numbness, but should not cause any serious issues unless you are allergic (which is rare). Your doctor will likely diagnose a spider bite based on your history and your signs and symptoms.
Symptoms
They prefer hiding in crevices, closets, around doors, and basements. Brown widow spiders are typically found in dark, undisturbed areas of your home like behind furniture, basements, attics, or garages. Inside the homes, black widows usually lurk in dark, dimly lit places like crevices, closets, cluttered areas, basements, and attics. Cellar spiders are common in houses throughout North America and are completely harmless.
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For most spider species, people are simply too large to be seriously affected. According to the Burke Museum, there are about 50,000 different species of spiders, and of those, only 25 have venom that may cause illness to humans. If you have noticed dirty cobwebs in the corners of your walls, they could have been left by a common house spider. These dust-covered cobwebs can easily be vacuumed up or swept down without fear of coming in contact with a spider.
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Harmless spider bites usually don't produce any other symptoms. 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.
Some spiders have fangs that leave a double mark behind, while others look more like a mosquito bite. Spider bites are typically red and swollen and may have blisters, pus, or discoloration. A bite from any spider should be immediately washed with soap and water. To aid with healing, apply an antibiotic ointment three times a day. The bite of a Brazilian wandering spider is extremely painful. The skin around the bite will usually swell, turn red, and get hot.
Cellar spiders are commonly found in attics, basements, crawl spaces, and undisturbed corners of rooms. You’ll often find the black house spider lurking in wall crevices, crawl spaces, behind baseboards, and window frames. Wolf spiders are brown like the recluse but do not have the ornamental violin shape on their heads. You may encounter them indoors and can release them outside. You may need an over-the-counter or prescription antihistamine to relieve itching and swelling from the spider bite. Keep the area clean while it heals to reduce the chance of infection.
If you’re bitten by a species of spider with less toxic venom, home remedies for spider bites can minimize pain and discomfort, and speed up healing. Although every spider species injects venom through their fangs to paralyze their prey, most spider venom isn’t strong enough to act as a toxin in humans. If your spider bite is minor, several home remedies and natural treatments may offer relief. But if the symptoms are more intense, or you suspect a venomous bite, call for medical attention.
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Indoors, they may be found in dark areas of the house like closets or the attic. But there are ways to soothe the pain and avoid an allergic reaction. Most of the more common bug bites and stings are harmless. It's not uncommon for someone to think they have a spider bite when they really have a skin infection.
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Shannen Zitz is an Assistant Editor at Prevention, where she covers all things lifestyle, wellness, beauty, and relationships. Previously the Editorial Assistant at Prevention, she graduated from the State University of New York at Cortland with a bachelor's degree in English. If she’s not reading or writing, you can probably find her frequenting the skincare and makeup forums on Reddit or hogging the squat rack at the gym.
Their body looks like it has a single, brown or gray oval-shaped segment with eight spindly legs protruding from it. Harvestmen are not venomous and are typically found outside in wooded areas or gardens. Spotting a spider in your immediate vicinity can be a little intense, especially if you have a major fear of the creepy crawlers. And, when one shows up in your home, it can be downright freaky. And with different species come different levels of concern—which makes learning how to identify the critters important. Brown widow spiders are also found in yards under rock piles, wood piles, and other sheltered areas.
Ranging in color from tan to dark brown, it has a distinct yellow or orange hourglass on the underside of its abdomen. Similarly, symptoms of a black widow spider bite usually take a few days or weeks to resolve. However, the bite of a few spiders — such as the black widow and the tarantula — can cause serious harm to humans. Anyone with a severe reaction to a spider bite should seek immediate medical help. Most people with spider bites experience mild symptoms like pain and swelling. Widow spiders range in color, as there are both brown and black widows, but both have a distinct reddish-orange hourglass shape on the underside of their abdomen.
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With a brown recluse bite, the skin is more likely to be white, purplish, or black rather than red. Though some spider bites can cause a small, red bump, a lesion with a red inflamed center is not suggestive of a venomous spider bite. Before getting into house spiders that have venomous bites, it's important to understand that more often than not, spiders are not aggressive and do not bite. "In my experience, the majority of household spiders are harmless and prefer to keep to themselves," says Mohamed Samir, pest control senior technician with Bugwise Pest Control. Many jumping spiders have red or white markings on their abdomens and can be confused for black widows. Jumping spiders, however, are not dangerous and are actually beneficial, as they enjoy hunting and pouncing on nuisance insects.
Brown recluse spider bites may sting at first, then feel painful. You may notice a small white blister at the site of the bite. Hobo spiders, wolf spiders, house spiders, and the bites of other domestic types do not contain venoms that are of medical importance to humans, Vetter says.
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