What distinguishes 2nd degree burns?

Second-degree burns are characterized primarily by the presence of blisters. This type of burn affects both the outer layer of skin, known as the epidermis, and the layer beneath it, the dermis. The formation of blisters is a key feature because it indicates that the burn has penetrated deeper than just the surface, causing the tissue to lose integrity and fluid to accumulate between the skin layers. This fluid-filled blistering is a protective response, as it helps to shield the underlying tissues from further injury and infection while healing takes place.

While dry, peeling skin can be associated with later stages of healing from burns, it is not a distinguishing feature of a second-degree burn. Similarly, redness without blisters is characteristic of first-degree burns, which only involve the epidermis. Blackened skin is indicative of third-degree burns, which extend through the full thickness of the skin and often affect underlying tissues as well. Understanding these distinctions is crucial for proper assessment and treatment of burn injuries.