What is the classification of burns that affect only the epidermis?

Burns that affect only the epidermis are classified as first-degree burns. This type of burn is characterized by causing redness, minor swelling, and pain, similar to a sunburn. Since only the outermost layer of skin is involved, first-degree burns typically heal well without the need for medical treatment and do not leave scarring.

In contrast, second-degree burns penetrate deeper into the skin and affect both the epidermis and part of the dermis, resulting in blisters and more significant pain. Third-degree burns extend through the dermis and into deeper tissues, leading to a loss of sensation in the area because nerve endings can be destroyed. Fourth-degree burns are even more severe, affecting not just the skin but also underlying tissues such as muscle and bone, often requiring surgical intervention. Understanding these classifications helps in assessing burn severity and planning appropriate treatment.