观察一度烧伤的迹象。 了解二度烧伤。 了解三度烧伤。 留意四度烧伤。 留意重度烧伤。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
After you spill hot water on your skin, you need to figure out what kind of burn you have. Burns are categorized by degree, where a higher degree means a worse burn. A first degree burn is a superficial burn to the top layer of skin. The symptoms you experience from a first degree burn include:  Damage to the top layer of skin Dry, red, and painful skin Skin blanching, or turning white, when you press it These will heal within three to six days without scarring If the water is hotter or you are