### Human:\nwhat is the difference between first- second- and third-degree burns?\n\n### Assistant: first-degree burns are red and painful. they swell a little and turn white when you press on them. the skin over the burn may peel off in a day or two. these are the least severe type of burn affecting only the outer layer of skin. second-degree burns have blisters and are painful. they affect both the outer and thicker middle layer of skin. third-degree burns cause damage to all layers of the skin. the burned skin looks white or charred. these burns may cause little or no pain if nerves are damaged.