Which characteristic is indicative of full thickness burns?

Full thickness burns, also known as third-degree burns, are characterized by their severity and depth of tissue damage. The correct identification of these burns includes a black or charred appearance, often described as leathery, along with the destruction of the epidermis and dermis layers of the skin. In full thickness burns, sensory nerve endings are often destroyed, which leads to a loss of sensation in the affected area. This is a critical aspect, as it differentiates it from less severe burns where pain and sensation remain intact.

The presence of a black or leathery appearance indicates significant tissue damage, and the loss of sensation suggests that the injury is severe enough to compromise the skin's nerve endings. Healing from full thickness burns typically requires medical intervention, often including surgical processes such as skin grafting.

In contrast, other options reflect characteristics of less severe burns. Redness and swelling typically describe first or second-degree burns, while blisters and moist or weepy skin are common in second-degree burns. Mottled red appearance with severe pain signifies a superficial burn or possibly deep partial thickness burn where some nerve endings are intact, allowing for the perception of pain.