Scratching where it itches reduces the presence of potentially harmful bacteria on the skin, studies in mice show.

Mosquito bites cause a release of histamine, which leads to itching and swelling. Bee stings, on the other hand, introduce venom that causes pain, swelling, and potentially allergic reactions.

Aside from the bump, you may experience some initial pain at the site of the bite, followed by itchiness for a few days. Mosquitoes leave itchy bumps on the skin that may swell and become red.

Mosquitoes are perhaps best known for leaving ... Their venom contains a neurotoxin that usually causes pain at the bite, which then spreads to the chest, abdomen, or the whole body.

Scratching an itch is almost irresistible — even though it can make a problem worse. Now researchers have discovered a mechanism that explains the "itch-scratch cycle".

In severe cases, dengue can be fatal. Dengue is treated with pain medicine as there is no specific treatment currently. Therefore people should be aware of the risks of dengue fever.  According to the ...