What type of burn is characterized by redness, swelling, and pain?

A burn characterized by redness, swelling, and pain is identified as a first-degree burn. This type of burn affects only the outer layer of skin, known as the epidermis. The primary clinical signs include redness due to increased blood flow, mild swelling from inflammation, and pain resulting from irritation of the nerve endings in the skin.

In contrast, second-degree burns involve both the epidermis and the underlying layer (the dermis), leading to additional symptoms such as blistering and more intense pain. Third-degree burns penetrate deeper into the skin, potentially damaging nerves and resulting in a lack of sensation in the affected area, which can cause significant complications. Fourth-degree burns extend through all layers of skin and may also involve muscles, tendons, and bones, presenting a severe and often life-threatening injury. Understanding these distinctions is crucial for proper first aid and treatment protocols in emergency situations.