Mosquito Bite: What Happens and Why It Itches?

When a mosquito bites, it pierces the skin with its proboscis, a long, thin mouthpart. The proboscis has six needle-like structures that work together to cut through the skin. Once the mosquito has pierced the skin, it injects saliva into the wound. This saliva contains a variety of substances that help the mosquito to feed, including an anticoagulant that prevents the blood from clotting, and a vasodilator that widens the blood vessels. The mosquito then sucks up the blood through its proboscis.

In most cases, mosquito bites are harmless and cause only mild itching. However, some mosquito bites can transmit diseases, such as malaria, dengue fever, and yellow fever. These diseases can be serious and even life-threatening.

If you are bitten by a mosquito, there are a few things you can do to reduce the itching and prevent infection.

* Wash the area with soap and water.

* Apply a cold compress to the area.

* Avoid scratching the area.

* If the itching is severe, you can take an over-the-counter antihistamine.

If you think you may have been infected with a mosquito-borne disease, see a doctor right away.