What is the medical term for the most serious burn that destroys the skin and tissues underneath?

• A. First degree burn
• B. Second degree burn
• C. Third degree burn
• D. Fourth degree burn

Answer: (C)

Understand how burn depth is classified. A burn that goes through the full thickness of the skin—the epidermis and the dermis—has destroyed the skin itself and often involves underlying tissues. This is what clinicians call a full-thickness burn, known as a third-degree burn. It’s more severe than a first-degree burn, which affects only the surface, and more than a second-degree burn, which damages the epidermis and part of the dermis and often blistered. Third-degree burns can appear white, brown, or leathery and may feel numb because nerve endings are damaged, making urgent medical care essential. Some classifications describe fourth-degree burns as extending deeper into muscle or bone, which is why that one is considered even more severe, but the description of destroying skin and tissues underneath fits the full-thickness, third-degree burn.