Final answer:
A blister-forming burn extending beneath the epidermis into the dermis is known as a Second-degree burn. This type of burn causes both swelling and blistering, requiring clean and sterile care to prevent infection.
Step-by-step explanation:
The type of burn that extends beneath the epidermis into the dermis causing a blister to form is a Second-degree burn.
When it comes to burns affecting the skin, there are varying levels of severity. A first-degree burn is the most superficial, only impacting the epidermis, and usually results in redness and pain; it's like a mild sunburn that heals quickly. The more serious second-degree burn affects not only the epidermis but also reaches into the dermis. This type of burn causes swelling and the painful blistering of skin, which necessitates keeping the area clean and sterile to avoid infection and promotes healing within a few weeks.
A third-degree burn goes even deeper, fully extending through the epidermis and dermis, destroying tissue, and affecting nerve endings. Fourth-degree burns are the most severe, with damage extending to the underlying muscle and bone. Third and fourth-degree burns often lack pain initially because nerve endings have been damaged. Both of these severe burns need medical intervention, including potential skin grafting, to heal.