Wilderness First Responder Exam Practice 2025 – Complete Prep Resource

A partial thickness burn, also known as a second-degree burn, is characterized by damage that extends through the epidermis (the outer layer of skin) and into the dermis (the second layer of skin). One of the hallmark symptoms of a partial thickness burn is the presence of blisters. These blisters form as a result of fluid accumulation between the layers of skin affected by the burn.

The formation of blisters serves as a protective barrier, helping to reduce the risk of infection and allowing the underlying tissue to heal. In contrast to partial thickness burns, full thickness burns typically present with no blisters, as the damage is more severe and extends deeper into the tissue.

Additionally, the sensation in areas affected by partial thickness burns can be intact or slightly reduced due to nerve endings being damaged but not completely destroyed, differentiating them from deeper burns, where sensation may be significantly diminished or absent. It's important to recognize these signs for effective assessment and treatment of burn injuries.