Which type of burn is characterized by blisters and swelling?

The type of burn characterized by blisters and swelling is a minor burn, specifically a second-degree burn. This type of burn affects both the outer layer of skin (epidermis) and the underlying layer (dermis), leading to pain, redness, swelling, and the formation of blisters as part of the body’s response to injury.

In the context of the other options, a chemical burn typically results from corrosive substances and is characterized by deep tissue damage rather than the blistering associated with a second-degree burn. A critical burn generally includes severe burns that penetrate deeply into the skin layers, potentially damaging underlying structures and often considered more serious injuries. Third-degree burns, on the other hand, involve all layers of the skin and may appear white, charred, or leathery but do not form blisters, as the damage is so extensive that it destroys nerve endings, making them less painful in that specific area.

Understanding the type of burn and its symptoms is critical for effective treatment and care. In the case of a minor burn, the presence of blisters indicates that the injury is more than superficial, requiring proper first aid to avoid infection and promote healing, which is a core aspect of lifeguard training and emergency response.