How do you classify a burn that causes redness, swelling, and pain but no blisters?

A burn characterized by redness, swelling, and pain with no blisters is classified as a first-degree burn. This type of burn affects only the outermost layer of the skin, known as the epidermis. The symptoms associated with a first-degree burn include erythema, pain upon touch, and often some mild swelling due to increased blood flow and inflammation in the area.

In contrast, second-degree burns involve not only the epidermis but also the underlying layer, the dermis, leading to the formation of blisters and more intense pain. Third-degree burns extend through the dermis and may damage deeper tissues, resulting in a waxy or charred appearance with diminished pain sensation due to nerve damage. Fourth-degree burns penetrate through all layers of skin and affect underlying tissues, including muscles and bones, leading to severe consequences and extensive medical treatment.

Understanding these classifications helps in determining the appropriate treatment and management for burn injuries.