When it comes to spider bites, there’s literally one person ever for whom it’s been a great experience (what up, Spiderman?) …and he’s fictional.
For the rest of us non-superheroes, getting bit by an eight-legged critter is something we’ll do anything to avoid. And with good reason: At best, getting bitten by a spider is an icky, slightly painful experience. But, at worst, it can be a life-threatening nightmare.
The good news: Out of the 3,000 or so types of spiders in the U.S., only a handful are known to bite, and of those, only about three have powerful enough venom to put your life at risk, according to research published in American Family Physician.
But if you don’t happen to be a spider expert, how do you know if your spider bite is cause for serious concern—or how to make the itching and burning stop? The Instagram photos below (all reviewed by experts) will give you an idea of what different types of spider bites look like—and what you should do if you spot one on your bod
Seriously this is getting old… and while I'm at it, F spiders. These bites make the total 15 in the last couple months. 4 occurred in a friend's garage, the rest in mine. I'm going on a spraying and killing spree this weekend. The bites get this weird white halo effect around them, and leak like a faucet on the 3rd day… it's gross! My hand got very swollen and even though the bites are just above my thumb, my whole arm from the elbow down itched like CRAZY. Takes about a week to heal, and a month to disappear completely. This pic is 2 days old and I'm on the upswing so at least I know the culprit is not deadly! . . #spider #spiderbite #spiderbites #ooze #pus #ouch #exterminate #garage #fuckspiders
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Sometimes, spiders leave behind two distinct puncture holes right next to each other—but unless you actually see the spider do the dirty deed, it’s hard to know if it was caused by an arachnid or some other biting bug.
In fact, the vast majority of “spider bites” are actually bites from other insects like fleas, ticks, and mosquitoes; are a rash from an allergic reaction; or are skin abscesses from an infection, says Justin Arnold, D.O., assistant professor of emergency medicine at the University of Alabama at Birmingham, and the associate medical director of the Alabama Regional Poison Control Center at Children’s of Alabama.
The symptoms are often similar, too—pain, swelling, itching, and redness—so it’s an easy mistake to make. In fact, even spider experts and medical professionals have a hard time differentiating bug bites from spider bites just from , he adds.
“Many people don’t recall an injury or specific bite and hold a common belief that a spider must have bitten them without them knowing,” he says. “In a majority of the cases that we see, a spider was never seen by patient and is not responsible for their infection.”
Oh I didn't stop posting because it got better. Most of the large brown scab finished falling off last night. I think it should heal faster from this point. My students have been really enjoying checking on it every other day. Everyone else in my life, not so much. #spiderbites #hobospiderbite #notsorry #thisisgross #loveyourself
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While poisonous bites are rare, any bite—spider or otherwise—can turn serious if it becomes infected, says Arnold. There are three main complications that can arise from bites: cellulitis, blisters, and swelling, says Arnold.
When a spider bite turns into cellulitis—a common (although painful) skin infection—a rash begins to spread around the wound, and the skin becomes painful and hot to the touch.
Another common reaction to many spider bites is to get “weeping” blisters at the site (they look puffy and fluid-filled). Small blisters on their own, with no other symptoms, don’t necessarily need special care but if a blister opens, it becomes at risk for infection, says Arnold.
Swelling is another very common symptom of insect or spider bites. Even though the swelling can get quite pronounced it’s not necessarily a problem, as long as it goes down within a few days. But if the swelling doesn’t go down, gets significantly worse, or is accompanied by other symptoms, it’s time to call your doctor, says Arnold.
Bitten by a spider yesterday… woke up this morning with no super powers ? #disappointed #damnaustralianwildlife #spiderbite #wantedsuperpowers #handyfortheopen #justleftwithitchingsoresinstead #doh
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The two most common spider bites are from house spiders, specifically the jumping spider and the wolf spider. While it can be scary to be bitten by any spider, these bites normally aren’t any more painful than a bee sting and shouldn’t cause problems beyond some redness, swelling, and itching, Arnold says.
Treat these at home by washing the site with soap and water, using cold compresses, and taking an ibuprofen to reduce pain and swelling, he adds.
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Black widow bites are no joke. Just ask @ashalcalder #spideysense #nofilter #blackwidowbite
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Of all of the spiders, black widows pose the greatest health threat to Americans, according to Rick Vetter, Ph.D., a spider expert in the department of entomology at the University of California, Riverside. Their bite is extremely painful and, while an antivenin (a.k.a. anti-venom) exists now, before it was discovered, about 5 percent of bitten people died.
Think you can ID a black widow bite on sight? Not so fast: The actual bite looks a lot like any other spider bite. However, they do tend to become more swollen and red than your general household spider bite, he says.
Black widow spiders are tough to identify, as well. Only female black widows have the characteristic red hourglass-shaped markings on their backs. Male and immature black widows have tan and white stripes, Vetter says.
Because these types of bites are so serious, if you strongly suspect you were bitten by a black widow or you develop muscle cramping, abdominal and chest pain, high blood pressure, a racing heart, and/or vomiting within two hours of a bite, go to the ER immediately, Arnold says.
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Ok, so for all those who have asked for photos of the lovely spider bite…here it is. From the Friday night discovery in the top left to this morning in the bottom right. I realize its gross and I'm sorry…but this was easier then sending all the photos to so many. I have been to the dr, and been on antibiotics since Saturday early afternoon. #SpiderBite #BrownRecluse #BrownRecluseBite #PhotoGrid
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The brown recluse spider is one of the most venomous in America, but they are limited to very specific geographic regions—if you don’t live in one of these places, it’s highly unlikely you need to worry about this type of bite, Vetter says. (Check out this map to see if you’re in the danger zone.)
And despite what you may have heard, even where brown recluses are present, they rarely bite, he adds. To identify a brown recluse, look for six eyes arranged in pairs. (Although getting close enough to see the eye pattern on a spider sounds, frankly, terrifying.)
Brown recluse spider bites do happen though, and when they do, they are often described by “sharp burning pain,” Arnold explains. Within several hours, the bite area becomes discolored and forms an ulcer that can takes several weeks to heal. In addition to the wound, individuals can also develop fevers, muscle aches, and in rare cases, severe anemia as a result of the venom.
Start by treating any bite at home with cold compresses and an antibiotic cream, but if you start to show severe symptoms, including a lot of swelling, increased pain, fever, spreading rash or other sign of infection, go to the doctor immediately, he adds. There isn’t an antivenin, but they can treat the symptoms and manage the infection.
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Healing pretty well – might not have a huge hole in my arm when it's done. #hobospiderbite #ihatebugs
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The hobo spider is actually a pretty common house spider in the U.S., but despite some scary media reports, they’re not aggressive and will only bite if provoked, according to the U.S. Forest Service. In addition, about half of hobo spider bites are “dry,” meaning they contain no venom, the service adds.
If you do receive a venomous bite, within a few hours it will become red and hard, similar to a mosquito bite, and within a day or two will develop blisters. After the blisters open, a scab typically forms along with a rash that often looks like a target or bull’s eye.
Because these wounds can become necrotic (as in, infected to the point they start killing surrounding tissue) and can last for years in some cases, you should see a doctor immediately, Arnold says. There isn’t an antivenin but they can treat the symptoms and manage any infection with antibiotics.
Hobo spiders can be hard to identify, according to the Forest Service. They are large and often have chevron-type markings on their backs, but these won’t be visible on darker-skinned adult spiders, which is why it’s important to get any bite checked out if it starts to show signs of infection or you see a target forming on your skin, Arnold says.
Took a love tap from my h.lividum, gonna feel that come morning. #wasworthit #venomous #tarantulabite #donttrythisathome #ishygddt #ouch #tarantula #cobaltblue #haplopelmalividum #hitmebabyonemoretime #gonnabeagoodday #love
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Tarantulas may look big and scary, but most of the North American varieties are pretty chill. And even while the bite itself can be painful, the venom is fairly benign and likely won’t cause long-term issues, Arnold says. Like most spider bites, tarantula bites can cause some swelling, itching, and irritation.
However, he adds, tarantulas also have the ability to flick hairs off of their body and into your skin, which can be very irritating and painful. And some people are allergic to tarantula venom, which can make the bite even more inflamed, according to the National Institutes of Medicine.
Most of the time, it’s fine to try treating these at home by washing the site, applying ice, and taking ibuprofen, he says. But if you find yourself having a more extreme reaction, including symptoms like rapid heart rate or difficulty breathing, get to the emergency room.
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