Which burn stage is characterized by redness and blister formation?

The stage characterized by redness and blister formation is indeed Stage 2. In this stage, the burn affects both the outer layer of skin (epidermis) and part of the underlying layer (dermis). This injury presents with swelling, redness, and the formation of blisters, which signify a deeper level of damage than a first-degree burn, where only the epidermis is affected.

Stage 2 burns are known as partial-thickness burns. They are painful and can be more serious than first-degree burns, as the blistering indicates that there is a significant compromise to the skin's integrity. Healing for Stage 2 burns typically takes longer and may require specialized treatment to prevent infection and promote proper recovery. The other stages involve different levels of severity: Stage 1 involves only superficial burns, while Stage 3 and Stage 4 indicate more severe burns that damage deeper tissues, potentially requiring surgical intervention and resulting in no pain in the affected area due to nerve damage.