Mosquito bites are the itchy bumps that appear after mosquitoes use their mouthparts to puncture your skin and feed on your blood.
The itchy welt that forms on the skin when a person has been ‘bitten’ by a mosquito is, in fact, an allergic reaction to the insect’s saliva, which it injects into the skin in order to prevent its victim’s blood clotting.
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A mosquito cannot actually bite because its jaws do not open, but the middle of its proboscis has six needlelike parts, called – stylets. These are protected by the insect’s flexible lower lip, or labium, most of the time.
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When a mosquito ‘bites’ the lip slides out of the way like a sleeve as the stylets puncture the skin. The channels made by the stylets allow saliva to flow into the wounds, thus allowing the insect to sip blood more easily. Only female mosquitoes bite and only those of a few of the 3,000 or more species attack animals and people
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Scratching the bump only makes this worse because it causes more irritation and inflammation of the sight, resulting in your immune system thinking it needs more antibodies to get rid of the foreign protein. So the more you scratch, the more it will swell; the itchier it will get; and the longer it will last.
Some of the worst diseases that people and animals suffer are spread by mosquitoes. Some species are carriers of such serious infections as Dengue fever, yellow fever, malaria and filariasis.