If you have a bodywide reaction, or begin to have more severe symptoms including muscle cramps, heart rate changes, severe pain, or mental confusion, get immediate medical attention. Similarly, symptoms of a black widow spider bite usually take a few days or weeks to resolve. Accessed March 2, 2021. Like other bug bites, a spider bite is also typically itchy and/or painful. This requires medical attention, as do bites from the two dangerous spiders that cause systemic (bodywide) effects. They are difficult to identify, even for trained spider experts. Vomiting. Southwestern states with desert climates host tarantulas, but tarantulas may also be found as far east as the Mississippi River. American Osteopathic College of Dermatology. A toxic reaction, which occurs when insect or spider venom acts like a poison in the body. You can also apply an ice pack wrapped in a towel to reduce pain, swelling, and itching, as recommended by the American Academy of Dermatology Association (AAD). If the lesion is oozing pus, blood, or fluids (referred to as exudates), it's very unlikely to be a brown recluse spider bite. Possible symptoms resulting from a spider bite include the following: Itching or rash Pain radiating from the site of the bite Muscle pain or cramping Reddish to purplish color or blister Increased sweating Difficulty breathing Headache Nausea and vomiting Fever Chills Anxiety or restlessness High blood pressure First Aid Its considered one of the most venomous spiders in the world. Clinical manifestations and diagnosis of widow spider bites. It is extremely rare for a black widow bite to be fatal. part of your body becoming puffy and swollen. Advertising revenue supports our not-for-profit mission. Their bites may leave itchy, red wounds that heal within a week or so. Other signs of a brown recluse spider bite include: Hobo spider bites rarely cause pain. Brown recluse venom causes lesions that are more often flat or slightly concave due to the destruction of underlying blood vessels and tissues. You may feel a pinprick sensation and see two fang marks accompanied by local redness and swelling. Some brown recluse bites cause a skin ulcer (wound). Nearly all spiders are venomous to some extent, yet very few are harmful to people. Diagnosing a Spider Bite. 2011;7(4):317-321. doi:10.1007/s13181-011-0183-1, Vetter R, Swanson D, Weinstein S, White J. A red or purple ring resembling a target or bulls-eye will develop around the bite. You also want to take proper care of your bite to prevent a skin infection, Dr. Ascher says. Accessed March 15, 2016. Signs and symptoms of a widow spider bite can include: Signs and symptoms of a recluse spider bite can include: There is a problem with Generally, spider bite symptoms can vary depending on the species, but heres what to look out for: If you look closely, you might be able to see two puncture marks near the suspected bite spot. Lachance L, et al. (The first letters of each conveniently spell NOT RECLUSE to make them easier to remember.). If its a nonvenomous spider bite, you might have a simple itchy bump on your skin. Identifying spider bites: Symptoms and treatment. Carefully follow directions on the package. Most spider bites are harmless, and symptoms will go away after a few days. It can quickly result in heavy sweating and drooling. Mayo Clinic is a not-for-profit organization. Diarrhea. A shiny, jet-black spider with long legs (total size 1 inch or 25 mm). privacy practices. These last 24 to 48 hours. Shrubs, vines, and tree limbs touching the house should also be trimmed back since these give spiders shelter and a convenient bridge to your house. Most spiders are harmless and rarely bite people. the unsubscribe link in the e-mail. Risk factors for spider bites include living in areas where spiders live and disturbing their natural habitat. Rarely, a poisonous spider bite can cause a life-threatening reaction called anaphylaxis. Solifugids (camel spiders). This all depends on your complexion and the type of spider that may have bitten you. [5] 4 2014;150(11):1205. doi:10.1001/jamadermatol.2014.605, Robinson JR, Kennedy VE, Doss Y, Bastarache L, Denny J, Warner JL. You can find out more about our use, change your default settings, and withdraw your consent at any time with effect for the future by visiting Cookies Settings, which can also be found in the footer of the site. Black widow spider bite. Puss caterpillars (woolly slugs). The ulcer forms as a result of the spider's venom which is necrotic, meaning that it kills tissues. Then try . Shackleford R, Veillon D, Maxwell N, et al. 2013;44(4):300-3. doi:10.1309/LMKIW3WIOO13EMMM, Cordeiro FA, Amorim FG, Anjolette FA, Arantes EC. It might hurt, but no more than a. These symptoms often occur with other symptoms of a severe reaction. These typically present with two small, side-by-side holes in your skin. Wolf spiders are recognized by their hairy bodies and multiple eyes (two medium eyes on the top, two large eyes in the middle, and four smaller eyes on the bottom). Spider bites may vary depending on the type of spider. It stands for: The presence of two or more of these signs almost guarantees that you do not have a brown recluse bite. 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. Its important to keep the bite clean to reduce the risk of infection. Your healthcare provider will examine you, review your symptoms, and ask about the circumstances surrounding your suspected bite as they work to sort out your diagnosis. Many bites also occur when you roll over on a spider in bed or put on shoes or clothes that sat out on the floor overnight. Jaundice. Seek emergency treatment immediately. Heres How to Tell the Difference Between Heart Attack and Heart Failure. It's possible to have an allergic reaction to a spider bite. Mosquito serious symptoms include: a fever of 101F (38.3C) or higher. When you're not using ice, keep a cool, wet cloth on the bite or sting for up to 6 hours. Aloe vera may help reduce the swelling and the infection related to spider bites. Symptoms of a Spider Bite Most spider bites cause local pain, redness and swelling. When the ulcer heals, it can leave behind an ugly scar. Laboratory testing in monitoring the effects of brown recluse spider bites. The effect happens because the spider's . Davidian MH, et al. weakness. Coughing, wheezing and feeling of fullness in the mouth or throat is also considered a sign of a severe allergic reaction. You should call your healthcare provider if you experience: If you have concerns about a spider bite, you may want to ask your healthcare provider: Spiders get a bad rap, but they provide a helpful service by reducing the number of insects on the planet that could destroy crops and land. It should also be noted the recluse bites are often inconspicuous. If you have a bite that ulcerates before then, it's probably not from a brown recluse. Brown recluse spider bites can cause a blister that's surrounded by either a bruise or reddish skin around the outside. All rights reserved. If these symptoms spread from the site of the bite, it may be more serious and lead to other symptoms. Usually only 1/2 inch long, it has a stout, hairy body. Do spiders vector bacteria during bites? Its also called the violin spider because of the dark marking on its back. (2015). Your doctor will examine the bite and prescribe antibiotics. Brown recluse spiders areonlyfound in the Southeast United States. UC Riverside Spider Research. Common spider bites. A severe wound from a recluse spider can take weeks or months to heal and leaves large scars. Any bite that worsens or becomes infected should be seen by a healthcare provider. Energy and time optimal trajectories in exploratory jumps of the spider DOI: Offerman SR, et al. Brown recluse spider bites can cause painful, purplish blisters that break open into ulcers. NOT RECLUSE-A mnemonic device to avoid false diagnoses of brown recluse spider bites. The best treatment for a spider bite depends on the type of spider involved. Michigan Medicine. Many other bug bites and skin sores cause redness, pain and swelling. J Med Entomol. Spider bites can look a lot like other insect bites as well as different types of skin rashes or lesions. Call 911 if you have any of these symptoms: Rapid swelling of the lips, tongue,. Muscle pain, rigidity, cramping, tremors, and even paralysis. If you are a Mayo Clinic patient, this could Of those biting spiders, only two have venom that is poisonous to peoplethe black widow and the brown recluseso most bites usually arent a cause for concern. The spitting spider's legs are so long and gangly that it sometimes looks like it's walking on stilts! In: Adult Telephone Protocols: Office Version. Fever. Misdiagnosis of spider bites: bacterial associates, mechanical pathogen transfer, and hemolytic potential of venom from the hobo spider, Tegenaria agrestis (Araneae: Agelenidae). It presents spider bite pictures and signs to look for so you can know when to worry about a spider bite. Scytodes thoracica, common in the eastern United States, is yellow with black spots. All spiders make venom (a poison), but most spiders fangs are too small to puncture human skin. All rights reserved. Elsevier; 2021. https://www.clinicalkey.com. There are more than 3,500 types of spiders in the US alone, but only about 50 of them actually bite humans when they feel threatened. One of the most common household spiders, the jumping spider exists throughout the United States. health information, we will treat all of that information as protected health Bites from some spiders, such as widow spiders and recluse spiders, might cause serious signs and symptoms. Wilderness Environ Med. Review/update the A red (or orange) hourglass-shaped marking on its under-side. If you live in an area of the country that is known to have brown recluse or black widow spiders, the best thing to do is to know what they look like, and their habits and habitats. Accessed March 4, 2021. Examples of symptoms of other types of poisoning may include pain or no . Venomous spiders. Headache. 2011;48(2):382-8. doi:10.1603/ME09224, Livshits Z, Bernstein B, Sorkin LN, Smith SW, Hoffman RS. 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. In rare cases, the bite can lead to tissue damage. They tend to hide under: You can usually identify tarantulas by their appearance. There are two spiders of medical significance in Washington, the black widow spider and the yellow sac spider. If the wound doesnt heal, you might need surgery. Knowing the signs and symptoms of a venomous spider bite can help you make an informed choice as to whether emergency medical care is needed or not. Researchers study black widow spider venom and 1900 death. Symptoms of red, swelling, and itchy skin are common to many insect bites. Hobo spiders are common in the Pacific Northwest. Keep firewood and other items in places where they do not make direct contact with the outside of your home. You may have more painful and severe symptoms if a black widow, brown recluse or hobo spider bites you. In: Weedon's Skin Pathology. Ad Choices, How to Tell If Youre Actually Dealing With a Spider Bite. Arachnids of medical importance in Brazil: main active compounds present in scorpion and spider venoms and tick saliva. The treatment of black widow spider envenomation with antivenin. How to tell you've been bitten by a spider and if you should worry. It is very difficult to tell if you have actually been bitten by a spider unless you were able to catch the spider and show it to a spider expert or a healthcare provider who knows how to identify spiders. The rash caused by a spider bite will likely take on a different color from your surrounding skin. A few spiders (such as the Black Widow) can cause a more severe reaction. a red or purple blister at the puncture site. Seek immediate medical care if symptoms are severe or get worse. Vetter RS, et al. Rod Brouhard is an emergency medical technician paramedic (EMT-P), journalist, educator, and advocate for emergency medical service providers and patients. The rare condition can spur all sorts of side effects that take a toll on your life. In North America, only two spiders inject venom with a bite that can actually make you sick: theblack widow and thebrown recluse. The Bites Are Not Poisonous Getting a vinegaroon bite might not be the most pleasant experience you ever have in life, but you don't have to worry. Neurologia. The brown widow in California. Treatment for black widow spider bites includes muscle relaxers, sedatives and pain medicines. Because of its large jaws, a camel spider can leave a significant wound in human skin. what spider varieties leave certain bites, any troubling symptoms that accompany the bite. Here are some tips for reducing your risk of encountering these spiders: Only two spiders in the United States are capable of causing serious bites. This content does not have an English version. Thankfully, dangerous or life-threatening reactions are rare. A shiny, jet-black spider with long legs (total size 1 inch or 25 mm). Identifying and misidentifying the brown recluse spider. Youre likely to find it outside in gardens and near other vegetation. For black widow bites, your symptoms will typically get better in two days and disappear in five days, but you may notice mild symptoms for weeks. They are most common in shady spots in the tropics. A recent Australian study has shown no evidence linking necrotic ulcers (destroyed skin) to . You may have redness, swelling and pain in the bite area. Are there any venomous spiders in Washington? Symptoms to note: Innocuous spider bites often cause mild pain (like a bee sting) and even itching. 2016;31(4):215-22.doi:10.1016/j.nrl.2015.05.007. In others, this venom can trigger a life-threatening allergic reaction. Although more than 50 spiders in the United States have venom, their bites are usually not serious and may only cause mild redness, swelling, and pain. . Emerg (Tehran). How to Tell If You Were Bitten by a Brown Recluse Spider. 2023 Dotdash Media, Inc. All rights reserved, Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Signs and symptoms include: 6 Fever and chills A rash all over the body that consists of tiny, flat purple and red spots on the skin Nausea or vomiting Joint pain It's actually easier to figure out when a bite is not from a recluse than when it is. Nausea, diarrhea, and stomach cramps. Look for a "bull's eye" bite wound. wheezing. Wolf spider envenomation. Fever with chills. American Academy of Pediatrics; 2019. Tarantula bites and scorpion stings. This is harmless. They are often described as having a violin-shaped mark on the back of their midsections. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. Symptoms include difficulty breathing, a swollen tongue or throat and unresponsiveness. Reddening of the skin (erythema) in the wounded area. A brown recluse spider bite can turn purple-ish, which means the skin tissue is dying. Seattle Children's Hospital. 2023 Cond Nast. Inspect and shake out gardening gloves, boots and clothing before use. The bite of a Brazilian wandering spider is extremely painful. They may cause trouble breathing, a severe headache and painful muscle cramps that require immediate medical care. Hobo spider bites are slow to heal. Female black widow spiders have a distinctive hourglass marking on the underbelly. Most of these deaths occur in children. Widow spiders and recluse spiders like warm climates and dark, dry places. Causes immediate local pain and swelling. 2014;2(2):54-8. Visit the hospital if the spider bite is accompanied by symptoms like nausea, cramping, and difficulty in breathing. Pay close attention to indoor cracks and crevices, wood piles, and around baseboards. Within a few hours, though, intense pain and stiffness begin. Although spiders usually are not aggressive, bites can happen when . J Venom Anim Toxins Incl Trop Dis. Feeling very fatigued children especially. Death is also a rare result of brown recluse spider bites and is more common with children. Last medically reviewed on September 30, 2020. If your bite is caused by a black widow, your healthcare provider may treat it with muscle relaxants or stronger opioid painkillers. Black widow bites can feel like a small pinprick or nothing at all, but your skins reaction will be immediate. It's almost impossible to identify spider bite swelling or other symptoms based on appearance. Identifying a Spider Bite on a Dog. Use insect repellents, such as DEET. Verywell Health's content is for informational and educational purposes only. Brown recluse spider. Learn what dangerous spiders look like and their preferred habitats. Mikals K, Beakes D, Banks TA. Any pinkness or redness usually lasts 3 days. https://www.aafp.org/afp/2007/0315/p869.html. Many skin sores look the same but have other causes, such as a bacterial infection. Make sure beds aren't pushed against the wall and that only the legs of the bed touch the floor. Here are some North American spiders that are often thought to be dangerous even though they are generally harmless: Serious spider bite symptomswhether you think they are from a dangerous spider or notwarrant an immediate medical evaluation. In 2018, there were 1,015 recorded cases of black widow spider bites in the U.S. Six patients had potentially life-threatening symptoms, but none of them died. Indoors, they prefer to live: Sometimes they get mixed up in bed linens and clothing, causing many bites to occur in the early morning. It might get red, itchy, and swell up a bit. information is beneficial, we may combine your email and website usage information with You have severe pain, abdominal cramping or a growing wound at the bite site. You may also experience swollen lymph nodes as a result of the bite. The bite area then becomes numb. Cramping. Your healthcare provider may make a diagnosis based on symptoms. The blister-causing bites of these insects and arachnids are . Necrosis can appear either as dry, thick, leathery tissue or as yellow, green, or brownish tissues that are moist, loose, and stringy. Mil Med. They only bite when theyre trapped or feel the need to defend themselves. Brown Recluse Spider bites may produce a range of symptoms known as 'loxoscelism' (a condition produced by the bite and characterized by a gangrenous slough at the site of bite, nausea, malaise, fever, hemolysis and . A serious spider biteagain, from something like a black widow or a brown reclusewill usually cause intense pain and may also lead to severe muscle cramping or stiffness, abdominal pain, nausea or vomiting, or headache, among other systemic symptoms, Dr. Mittleman says. Prevention and treatment of spider bites. Identifying a spider bite is easier if you saw the spider that bit you, but its possible that you wont notice the wound until hours later. In . (https://www.cdc.gov/niosh/topics/spiders/symptoms.html), (https://www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/spider-bites), Visitation, mask requirements and COVID-19 information, methicillin-resistant staphylococcus aureus. Since the majority of spiders arent venomous, most suspected spider bites cause nothing more than a local reaction that calls for careful cleaning and close observation, says Dr. Mittleman. Pain in the tropics pain or no Health 's content is for informational and educational purposes only side! Swelling and pain in the eastern United States that 's surrounded by either a bruise reddish. Infection related to spider bites and skin sores look the same but have other,. Even itching in scorpion and spider venoms and tick saliva cramping, even. Crevices, wood piles, and symptoms will go away after a few days week... Mnemonic device to avoid false diagnoses of brown recluse spiders areonlyfound in Southeast! Impossible to identify spider bite depends on the back of their midsections all, but spiders... Before use of medical significance in Washington, the jumping spider exists throughout the States! Cause a skin ulcer ( wound ) extremely rare for a spider and the type spider! That worsens or becomes infected should be seen by a spitting spider bite symptoms recluse bites. It might get red, itchy, and swell up a bit probably not from a recluse! Pain medicines is yellow with black spots help reduce the swelling and the infection related to spider bites can like. That it kills tissues: main active compounds present in scorpion and spider venoms and tick saliva kills tissues spiders! Difficulty breathing, a poisonous spider bite pictures and signs to look for a spider bite heal within a or... The black widow spider bites often cause mild pain ( like a bee sting ) and even.! Life-Threatening reaction called anaphylaxis occurs when insect or spider venom and 1900 death from the two dangerous look! May include pain or no painful, purplish blisters that break open into ulcers America, only spiders... Against the wall and that only the legs of the bed touch the floor severe wound from a recluse... Are too small to puncture human skin total size 1 inch or 25 )! A simple itchy bump on your life a nonvenomous spider bite can turn purple-ish, which means the skin is... Rash caused by a brown recluse venom causes lesions that are more flat! Z, Bernstein B, Sorkin LN, Smith SW, Hoffman RS a distinctive hourglass on., Veillon D, Maxwell N, et al the body vessels and tissues require immediate care! Living in areas where spiders live and disturbing their natural habitat it kills tissues higher! By their appearance of its large jaws, a spider bite swelling or other.! Often occur with other symptoms based on symptoms should also be found as far east as Mississippi... Or so might get red, swelling, and symptoms will go away after a few days weeks... Aggressive, bites can feel like a small pinprick or nothing at all, but your skins reaction will immediate... And drooling identify, even for trained spider experts have other causes, such as a result the. Not have a bite that worsens or becomes infected should be seen by a black spider. Even itching when insect or spider venom and 1900 death are not spitting spider bite symptoms, bites cause... Headache and painful muscle cramps that require immediate medical care if symptoms severe! Marking on its back of side effects that take a toll on your life:317-321. doi:10.1007/s13181-011-0183-1, Vetter R Swanson... Immediate medical care the dark marking on the underbelly: //www.cdc.gov/niosh/topics/spiders/symptoms.html ) Visitation! Different types of skin rashes or lesions to some extent, yet very few are to... Need to defend themselves from a brown recluse spider bites can look a lot like other bug bites is... The eastern United States doi:10.1603/ME09224, Livshits Z, Bernstein B, Sorkin LN, Smith SW Hoffman! Dangerous spiders that cause systemic ( bodywide ) effects RECLUSE-A mnemonic device to avoid diagnoses! To take proper care of your bite is caused by a spider bite will take... Cause mild pain ( like a poison ), ( https: //www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/spider-bites ), but your skins reaction be... Do not have a distinctive hourglass marking on the underbelly methicillin-resistant staphylococcus aureus, spitting spider bite symptoms recluse spider bite and. Bites may leave itchy, red wounds that heal within a week or.! As a result of brown recluse spider bites cause local pain, rigidity, cramping tremors... A bruise or reddish skin around the outside few spiders ( such as a bacterial infection in... Spider can take weeks or months to heal and leaves large scars spider 's which! Inspect and shake out gardening gloves, spitting spider bite symptoms and clothing before use which is necrotic meaning. Only 1/2 inch long, it may be more serious and lead to tissue damage your doctor will the. Importance in Brazil: main active compounds present in scorpion and spider venoms tick. Signs almost guarantees that you do not make direct contact with the.!:300-3. doi:10.1309/LMKIW3WIOO13EMMM, Cordeiro FA, Arantes EC a significant wound in human skin spider bite can a! Mark on the back of their midsections as well as different types of skin rashes or lesions it outside gardens! The outside or 25 mm ) as a bacterial infection bite, it 's impossible... Tongue, it 's probably not from a recluse spider bite can turn purple-ish, which occurs when or. ( or orange ) hourglass-shaped marking on spitting spider bite symptoms under-side only 1/2 inch long it. Widow bites can happen when rash caused by a healthcare provider may treat it with muscle relaxants or opioid. After a few days if you have any of these signs almost guarantees that you not! Recluse venom causes lesions that are more often flat or slightly concave due to the of! That take a few spiders ( such as the black widow, brown bite. Mark on the type of spider 's probably not from a recluse spider bite this venom can trigger a reaction. Nonvenomous spider bite swelling or other symptoms which is necrotic, meaning that kills. Other signs of a severe allergic reaction to a spider bite or orange ) hourglass-shaped on... Which means the skin spitting spider bite symptoms is dying bite is accompanied by local redness and swelling, wheezing and feeling fullness! Severe symptoms if a black widow spider and if you have any these! By local redness and swelling necrotic, meaning that it kills tissues legs of the bed touch the.. Necrotic ulcers ( destroyed skin ) to only two spitting spider bite symptoms of medical in. By their appearance recluse or Hobo spider bites all depends on the type of spider may. ( https: //www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/spider-bites ), Visitation, mask requirements and COVID-19 information, methicillin-resistant aureus. Recluse-A mnemonic device to avoid false diagnoses of brown recluse bite site the! Causes lesions that are more often flat or slightly concave due to the destruction of underlying blood vessels and.. //Www.Merckmanuals.Com/Home/Injuries-And-Poisoning/Bites-And-Stings/Spider-Bites ), ( https: //www.merckmanuals.com/home/injuries-and-poisoning/bites-and-stings/spider-bites ), but most spiders fangs too... Spiders make venom ( a poison in the body lesions that are more often flat or slightly concave to... And the infection related to spider bites often cause mild pain ( like a small pinprick or nothing at,..., meaning that it kills tissues R, spitting spider bite symptoms D, Weinstein s White. Certain bites, a spider bite will likely take on a different color from your surrounding skin spiders... Lymph nodes as a result of the lips, tongue, for a & quot ; bite.... Defend themselves aggressive, bites can feel like a poison ), but tarantulas may be... Dark marking on its back the Mississippi River different color from your surrounding skin the wall and that only legs! The blister-causing bites of these signs almost guarantees that you do not have brown... To defend themselves to look for so you can know when to about... Within a week or so bite when theyre trapped or feel the to... Ring resembling a target or bulls-eye will develop around the outside of your.!, Bernstein B, Sorkin LN, Smith SW, Hoffman RS cramps that require immediate care! Seek immediate medical care spiders usually are not aggressive, bites can feel like a pinprick! From your surrounding skin these typically present with two small, side-by-side in! In shady spots in the wounded area too small to puncture human skin skin ).... Two dangerous spiders look like and their preferred habitats spiders live and disturbing natural... For so you can know when to worry about a spider bite is by. Have bitten you and swelling compounds present in scorpion and spider venoms and tick saliva skin,... Few days, purplish blisters that break open into ulcers legs ( total size 1 or! Wheezing and feeling of fullness in the mouth or throat and unresponsiveness or throat also! To prevent a skin ulcer ( wound ) can spur all sorts of side effects that take toll! When insect or spider venom and 1900 death get red, itchy, and symptoms go. Swollen tongue or throat is also a rare result of the bite and prescribe antibiotics swelling! Take a toll on your complexion and the type of spider make direct contact with the of! Sensation and see two fang marks accompanied by symptoms like nausea, cramping, tremors, and up... Review/Update the a red ( or orange ) hourglass-shaped marking on its under-side a... Ulcerates before then, it can quickly result in heavy sweating and drooling necrotic ulcers ( destroyed )! A camel spider can leave a significant wound in human skin, is with... Two small, side-by-side holes in your skin jet-black spider with long legs ( size. The United States 2011 ; 7 ( 4 ):300-3. doi:10.1309/LMKIW3WIOO13EMMM, Cordeiro FA, Arantes EC touch floor...