Itch is a sensation that causes a desire to scratch the skin. It can be triggered by various factors, including insect bites, allergies, skin conditions, or irritants. The sensation is often a response to inflammation or irritation in the skin, signaling the body to remove potential threats. When a person scratches an itch, it can provide temporary relief, but excessive scratching may lead to skin damage or infection. Treatments for itchiness often include moisturizers, antihistamines, or topical creams, depending on the underlying cause. Understanding the source of the itch is essential for effective management.