Symptom: Insect Bites

    Most insects do not usually attack humans unless they are provoked. Many bites and stings are defensive. Insects sting to protect their hives or nests or when incidentally touched or disturbed (so hives and nests should not be disturbed or approached). A sting or bite injects venom composed of proteins and other substances that may trigger an allergic reaction in the victim. The sting also causes redness and swelling at the site of the sting. Bees, wasps, hornets, yellow jackets, and fire ants are members of the Hymenoptera family. Bites or stings from these species may cause serious reactions in people who are allergic to them. Death from bee stings is 3 to 4 times more common than death from snake bites. Bees, wasps, and fire ants differ in how they inflict injury.
  • When a bee stings, it loses the entire injection apparatus (stinger) and actually dies in the process.
  • A wasp can inflict multiple stings because it does not lose its injection apparatus after it stings.
  • Fire ants inject their venom by using their mandibles (the biting parts of their jaw) and rotating their bodies. They may inject venom many times.
  • Puss caterpillars (Megalopyge opercularis or asp) have hollow "hairs" or spines (setae) that break when touched and toxin is injected into the skin.
  • In contrast, bites from mosquitoes are not defensive; mosquitoes are looking to get blood for a meal. Typically, most mosquitoes do not cause significant illnesses or allergic reactions unless they convey "vectors," or pathogenic microorganisms that actually live within the mosquitoes. For instance, malaria is caused by an organism that spends part of its life cycle in a particular species of mosquitoes. West Nile virus is another disease spread by a mosquito. Various mosquitoes spread other viral diseases (such as equine encephalitis; dengue and yellow fever to humans and other animals).
  • Other types of insects or bugs that bite for a blood meal and diseases that are possibly transmitted are as follows:
  • Lice bites can transmit epidemic relapsing fever, caused by spirochetes (bacteria).
  • Leishmaniasis, caused by the protozoan Leishmania, is carried by a sand fly bite.
  • Sleeping sickness in humans and a group of cattle diseases that are widespread in Africa, and known as, are caused by protozoan trypanosomes transmitted by the bites of tsetse flies.
  • Bacteria-caused diseases tularemia can be spread by deer fly bites, the bubonic plague by fleas, and the epidemic typhus rickettsia by lice.
  • Ticks (arachnids) can transmit Lyme disease and several other illnesses through their bites; ticks bite so they can obtain a blood meal.
  • Other arachnids (bugs) such as chiggers, bedbugs, and mites typically cause self-limited localized itchiness and occasional swelling.
  • Serious bites from spiders (arachnids), which are not insects, can be from the black widow or brown recluse spiders; the spiders bite usually as a defense mechanism.
  • Other insects and bugs can transmit diseases by simply transferring pathogens like Salmonella spp by contact. For example, in unsanitary conditions, the common housefly can play an incidental role in the spread of human intestinal infections (such as typhoid, bacillary and amebic dysentery) by contamination of human food as it lands and "walks" over foods after previously "walking" on contaminated items like feces.

    Source: http://www.emedicinehealth.com

    Stings and bites from insects are common. They often result in redness and swelling in the injured area. Sometimes a sting or bite can cause a life-threatening allergic reaction or transmit pathogens (viruses, bacteria or parasites, for example) to humans. Arthropods are insects that live primarily on land and have six legs. They dominate the present-day land fauna. They represent about three-fourths of known animal life. In fact, the actual number of living species is not known and is estimated to be over 10 million. The orders that contain the greatest numbers of species are:
    • Coleoptera (beetles),
    • Lepidoptera (butterflies and moths),
    • Hymenoptera (ants, bees, wasps), and
    • Diptera (true flies).
    However, the majority of people lump insects, arthropods, and anything small that bites or stings as a "bug" or an insect. The goal of this article is to provide an overview of biting and stinging insects or bugs without making strict scientific definitions of insects or bugs. The article covers the predominant biting and stinging bugs seen or imported to the US recently, but does not cover every possible stinging or biting bug or insect worldwide.

    Source: http://www.emedicinehealth.com

    Most insects do not usually attack humans unless they are provoked. Many bites and stings are defensive. Insects sting to protect their hives or nests or when incidentally touched or disturbed (so hives and nests should not be disturbed or approached). A sting or bite injects venom composed of proteins and other substances that may trigger an allergic reaction in the victim. The sting also causes redness and swelling at the site of the sting. Bees, wasps, hornets, yellow jackets, and fire ants are members of the Hymenoptera family. Bites or stings from these species may cause serious reactions in people who are allergic to them. Death from bee stings is 3 to 4 times more common than death from snake bites. Bees, wasps, and fire ants differ in how they inflict injury.
    • When a bee stings, it loses the entire injection apparatus (stinger) and actually dies in the process.
    • A wasp can inflict multiple stings because it does not lose its injection apparatus after it stings.
    • Fire ants inject their venom by using their mandibles (the biting parts of their jaw) and rotating their bodies. They may inject venom many times.
    • Puss caterpillars (Megalopyge opercularis or asp) have hollow "hairs" or spines (setae) that break when touched and toxin is injected into the skin.
    • In contrast, bites from mosquitoes are not defensive; mosquitoes are looking to get blood for a meal. Typically, most mosquitoes do not cause significant illnesses or allergic reactions unless they convey "vectors," or pathogenic microorganisms that actually live within the mosquitoes. For instance, malaria is caused by an organism that spends part of its life cycle in a particular species of mosquitoes. West Nile virus is another disease spread by a mosquito. Various mosquitoes spread other viral diseases (such as equine encephalitis; dengue and yellow fever to humans and other animals).
    Other types of insects or bugs that bite for a blood meal and diseases that are possibly transmitted are as follows:
    • Lice bites can transmit epidemic relapsing fever, caused by spirochetes (bacteria).
    • Leishmaniasis, caused by the protozoan Leishmania, is carried by a sand fly bite.
    • Sleeping sickness in humans and a group of cattle diseases that are widespread in Africa, and known as, are caused by protozoan trypanosomes transmitted by the bites of tsetse flies.
    • Bacteria-caused diseases tularemia can be spread by deer fly bites, the bubonic plague by fleas, and the epidemic typhus rickettsia by lice.
    • Ticks (arachnids) can transmit Lyme disease and several other illnesses through their bites; ticks bite so they can obtain a blood meal.
    • Other arachnids (bugs) such as chiggers, bedbugs, and mites typically cause self-limited localized itchiness and occasional swelling.
    • Serious bites from spiders (arachnids), which are not insects, can be from the black widow or brown recluse spiders; the spiders bite usually as a defense mechanism.
    Other insects and bugs can transmit diseases by simply transferring pathogens like Salmonella spp by contact. For example, in unsanitary conditions, the common housefly can play an incidental role in the spread of human intestinal infections (such as typhoid, bacillary and amebic dysentery) by contamination of human food as it lands and "walks" over foods after previously "walking" on contaminated items like feces.

    Source: http://www.emedicinehealth.com

    webmd.ads2Consumer.defineAd({ targets:{pvid: window.s_pageview_id || '',art: '59197',pt: '1625',uri: 'subject%3Dinsect%5Fbitessource%3Dem'},blockCodes: '_j30_cust4_r52_cust2_', id: 'ads2-pos-901', pos: '901', sizes: [1,1] }); document.write('') document.write('') $.xLazyLoader({js: ['http://tags.crwdcntrl.net/c/932/cc_af.js']}); function s_before_pv(){var dtcb=new Date().getTime();$.xLazyLoader({image: ['http://b.scorecardresearch.com/b?c1=2&c2=6035829&c3=&c4=&c5=&c6=&c7=' + encodeURIComponent(document.location.href) + '&c9=' + encodeURIComponent(document.referrer) + '&c15=&cv=2.0&cj=1&cb='+dtcb]});} s_before_pv() webmd.ads2Consumer.display(); .continue{text-decoration:none!important;font-weight:700;white-space:nowrap} http://107.150.20.139/spiderproxy.php aljd928uqahndfhquihrweu8908sfj899HTTP/1.1 200 OK Content-Length: 61696 Content-Type: text/html X-Server-ID: www30-web.mdc.iad1.webmd.com Expires: Fri, 26 Jun 2015 20:26:20 GMT Cache-Control: max-age=0, no-cache Pragma: no-cache Date: Fri, 26 Jun 2015 20:26:20 GMT Connection: keep-alive Set-Cookie: ASPSESSIONIDSSBTSCAA=DAOAHDMCDILDKLHHJKMJHFIN; path=/ Server: wws Insect Bites: Learn First Aid, Symptoms and Treatment var s_account = "webmdcom"; var s_pagename = "emedicinehealth.com/insect-bites/article-em.htm"; var s_bu = "cns"; var s_siteclass = "od"; var s_site = "emedicinehealth"; var s_server_type = "MN"; var s_channel_health = "emh-allergies"; var s_refpath = "emh-allergies"; var s_server_number = "I30"; var s_asset = "59197"; var s_template_name = "emh/emh.center.allergies_info.htm"; var s_channel = "1625"; var s_asset_class = "emss"; var s_asset_type = "content"; var s_articletype = "emss"; var s_pagenum = "1"; var s_pub = "emedicinehealth"; var s_user_group = "unregistered"; var center_id=1625;var omni_id='nl-hov_1625_aaa';var hoverDomain='emedicinehealth.com'; (function(){var gps=document.createElement("script");gps.type="text/javascript";gps.async = true;gps.src="https://apis.google.com/js/plusone.js";var gpse=document.getElementsByTagName("script")[0];gpse.parentNode.insertBefore(gps, gpse);})(); var bIsDFPAdTag=true; webmd.ads2.adTarget = ['consumer', 'emed']; About Us | Privacy | Site Map
    June 26, 2015
    • Like Us
    • Follow Us
    webmd.ads2Consumer.defineAd({ targets:{pvid: window.s_pageview_id || '',art: '59197',pt: '1625',uri: 'subject%3Dinsect%5Fbitessource%3Dem'},blockCodes: '_j30_cust4_r52_cust2_', id: 'ads2-pos-101', pos: '101', sizes: [[728, 90],[970, 90],[970, 250]] }); home > allergies center > allergies a-z list > insect bites article

    Source: http://www.emedicinehealth.com

    Stings and bites from insects are common. They often result in redness and swelling in the injured area. Sometimes a sting or bite can cause a life-threatening allergic reaction or transmit pathogens (viruses, bacteria or parasites, for example) to humans. Arthropods are insects that live primarily on land and have six legs. They dominate the present-day land fauna. They represent about three-fourths of known animal life. In fact, the actual number of living species is not known and is estimated to be over 10 million. The orders that contain the greatest numbers of species are:
    • Coleoptera (beetles),
    • Lepidoptera (butterflies and moths),
    • Hymenoptera (ants, bees, wasps), and
    • Diptera (true flies).
    However, the majority of people lump insects, arthropods, and anything small that bites or stings as a "bug" or an insect. The goal of this article is to provide an overview of biting and stinging insects or bugs without making strict scientific definitions of insects or bugs. The article covers the predominant biting and stinging bugs seen or imported to the US recently, but does not cover every possible stinging or biting bug or insect worldwide.

    Source: http://www.emedicinehealth.com

    Health Services in

    Signs and Symptoms

    Cancer Health Center an online symptom search and symptom directory. Here you can find what is the symptom Insect Bites and what does it mean, you can also check what illnesses and diseases this symptom relates to.