Which of the following describes a first-degree burn?

A first-degree burn is characterized by minor damage to the outer layer of skin, known as the epidermis. Commonly described as a sunburn, this type of burn results in redness and slight swelling. The skin may feel warm to the touch, and you might experience some discomfort or pain. This is a superficial burn, meaning it generally heals on its own without significant medical intervention.

The presence of blisters is indicative of a second-degree burn, as this level of injury involves both the epidermis and part of the underlying layer, known as the dermis. Charred skin, bone, or muscle indicates a third-degree burn, which is much more severe and involves complete destruction of the skin layers and damage to underlying tissues. Skin that becomes red and swollen also fits the description of a first-degree burn, but it does not encompass the complete nature of the burn as accurately as the term "sunburn." Thus, referring to it as a sunburn provides a clear context for understanding the characteristics of a first-degree burn.