stef
Posts: 10215
Joined: 1/26/2004 Status: offline
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quote:
ORIGINAL: mnottertail I don't remember the irritant in mosquitoes saliva that they use to lube when the drill you, try pulling hard on your shirt and bust their little noses off. Obviously not a long term toxicant It's not a toxin. The histamine reaction people experience from mosquito bites is due to the body's immune system reacting to proteins in the mosquito's saliva. The proteins act as an anticoagulant and are injected continuously as the mosquito feeds. The swelling after a 'bite' is evidence of the immune system's reaction to those proteins. When proteins in the saliva reach mastocytes in our connective tissue, histamine and heparin are released which dilate blood vessels and cause localized edema to speed the immune system's response to the injury. This increased blood flow and edema cause the classic flare and wheal associated with insect bites. The histamine also antagonizes nerve endings which causes the wonderful itching sensation that we're all familiar with. As someone else suggested, you should NOT take Benadryl after a mosquito bite unless the reaction is severe as it will impede the healing reaction. A topical solution can be used to treat the itching but it should otherwise be left alone to allow the body to deal with it. If you're having severe reactions, you should be under the care of an allergist and following their instructions anyway. ~stef
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