Surprisingly, but such little and fragile insect as a mosquito, is capable to spoil life to the person, huge in comparison with it. Their stings do not allow to fall asleep, itch, look not esthetically and even spoil suntan. Besides, there is a number of diseases which carrier are mosquitoes.
Why mosquitoes bite
The fact that not all mosquitoes but only females of these insects, know everything bite. But what forces them to suck blood and how they choose to themselves the victim? Instincts of females of a mosquito, as well as a lot of things in the nature, are ready for survival of a look in general, that is for reproduction. To lay eggs, this insects need the proteins and lipids which are contained in blood. For this reason the mosquito looks for the victim, literally "sniffs up" it.
It is interesting that the most part of olfactory receptors of a mosquito is ready for sweat warm-blooded, these can explain why in one room a part of people will be bitten from legs to the head, and mosquitoes as if will not notice someone. The point is not that someone sweats more, just the substances emitted by their skin are caught blood-sicking better.
It is interesting that mosquitoes prefer to bite large people – they generate more heat and the sweat attracting insects.
The causes of an itch at a sting of a mosquito
Having found the suitable victim, the female of a mosquito pierces epidermis a proboscis and tries to grope the smallest capillaries. But before beginning to soak up blood, the insect injects under skin special substance – anticoagulant, it does not allow to turn to proteins of blood. Saliva of a mosquito is, of course, not poisonous, but it causes all unpleasant consequences from a sting – hypostasis, an itch and reddening.
As a matter of fact all these results of injection of anticoagulant on skin nothing but allergic reaction. At someone everything passes practically without consequences, and the most sensitive people really suffer – at them places of stings swell up and begin to hurt.
The mosquito sting can lead not only to unpleasant feelings, saliva of an insect becomes frequent the cause of infection with serious diseases, among them there are malaria, some types of fevers, bacterial and viral infections.
How to avoid an unpleasant itch after a mosquito sting
There is an opinion that if not to drive away the mosquito which stuck into flesh, then he will not be frightened and will not let in the poison under skin. That is, it is better to sit and look quietly until the insect is sated and will depart. Actually poison is injected by a mosquito into a body of the victim how it begins to exhaust blood, it is necessary in order that she did not curl up. Therefore any sense to admire a blood-sicking insect is not present. Better or in advance to use the means which are frightening off mosquitoes or as soon as possible to apply antihistaminic medicine of local action on the place of a sting. Such medicine is produced in the form of gel, cream, ointment.