First-degree burn

Definition

A first-degree burn is a superficial injury that affects only the outer layer of the skin, known as the epidermis. It typically results in redness, minor swelling, and pain but does not cause blisters or permanent damage to the skin.

Related terms

Epidermis: The outermost layer of skin that provides a waterproof barrier and creates our skin tone.

Dermis: The layer beneath the epidermis that contains tough connective tissue, hair follicles, and sweat glands.

Blister: A small bubble on the skin filled with serum, plasma, blood, or pus caused by friction, burning, freezing, chemical exposure, or infection