Which burn type involves all layers of the skin and may extend to underlying tissues?

The type of burn that involves all layers of the skin and may extend to the underlying tissues is a full thickness burn. This type of burn affects the epidermis (the outer layer), the dermis (the middle layer), and can also damage deeper structures such as subcutaneous fat or muscle. Because of this extensive damage, full thickness burns can appear white, charred, or leathery, and often do not cause pain initially due to the destruction of nerve endings.

In contrast, first-degree burns only impact the outer layer of skin and typically result in redness and pain without blistering. Second-degree burns affect both the epidermis and part of the dermis, causing blisters and severe pain but not extending to deeper tissues. Partial thickness burns also involve the epidermis and part of the dermis but are not as deep as full thickness burns. Recognizing the differences in burn types is crucial for effective treatment and care.