Which degree of burn is characterized by blistering?

A second-degree burn is characterized by blistering, which occurs because the injury affects both the epidermis (the outer layer of skin) and the dermis (the second layer of skin). This type of burn typically results in redness, swelling, and significant pain. Blisters may develop as part of the body's response to protect the damaged area and help prevent infection while healing.

In contrast, first-degree burns only impact the epidermis and are usually characterized by redness and minor pain without blistering. Third-degree burns extend deeper, often damaging all layers of the skin and potentially affecting underlying tissues, which can result in a waxy or charred appearance, but usually do not present with blisters. Fourth-degree burns penetrate even deeper, affecting muscles and bones, and may not be painful due to nerve damage. Therefore, only second-degree burns are specifically known for the presence of blisters.