Burns are injuries to the skin caused by heat, chemicals, electricity, or radiation. They can range from mild to severe, with first-degree burns affecting only the outer layer of skin, causing redness and pain. More serious burns, like second-degree burns, damage deeper layers and can cause blisters, while third-degree burns destroy all layers of skin and may require medical treatment. To treat burns, it's important to cool the affected area with running water and cover it with a clean, dry cloth. For severe burns, such as those caused by fire or hot liquids, seeking immediate medical attention is crucial to prevent complications and promote healing.