Final answer:
A second-degree burn is a serious injury that affects both the epidermis and a portion of the dermis, leading to swelling and blistering. Proper care is essential to prevent infection and promote healing over several weeks.
Step-by-step explanation:
A second-degree burn, also known as a partial-thickness burn, is a type of burn that injures both the outer layer of skin (epidermis) and a portion of the underlying layer of skin (dermis). Unlike a first-degree burn, which only affects the epidermis and often heals on its own, a second-degree burn is more severe and results in swelling and painful blistering of the skin. It is imperative to keep the affected area clean and sterile to avoid infection and promote healing, which could take several weeks.
It is important to distinguish between the degrees of burns when assessing the severity and necessary treatment. While burns like sunburn are usually first-degree, partial-thickness burns are more serious and may require more extensive medical care. If a burn progresses deeper into the skin, affecting all layers and potentially underlying muscle and bone, it becomes a third or fourth-degree burn, which involves a longer healing process and can be life-threatening.