Insect bites occur when insects, such as mosquitoes, bees, or ants, pierce the skin to feed on blood or inject venom. The bite can cause various reactions, ranging from mild irritation and redness to severe allergic responses. Common symptoms include itching, swelling, and pain at the site of the bite. Most insect bites are harmless and can be treated with over-the-counter remedies like antihistamines or topical creams. However, some bites may lead to infections or more serious conditions, especially if the individual has an allergy to the insect's venom. It's important to monitor bites and seek medical attention if symptoms worsen.