What degree of burn is characterized by reddening of the skin?

The degree of burn characterized by reddening of the skin is indeed a first-degree burn. In first-degree burns, only the outer layer of skin (the epidermis) is affected. This type of burn typically results in mild pain, swelling, and redness without any blister formation. Common examples include mild sunburn and brief contact with hot surfaces.

In contrast, second-degree burns involve not only the epidermis but also the underlying layer (the dermis). These burns can cause redness, swelling, and blisters, along with more pronounced pain and healing typically takes longer.

Third-degree burns extend through the dermis and affect deeper tissues, appearing white, charred, or leathery, and often do not cause pain in the burned area due to nerve damage.

Fourth-degree burns go beyond skin and tissue damage to muscle and bone, resulting in severe consequences and extensive treatment requirements.

Understanding these distinctions helps clarify why first-degree burns specifically present as reddened skin, making it important for fire investigators and responders to identify burn degrees accurately in various scenarios.