Final answer:
Superficial partial thickness refers to a burn injury that affects the outer layer of the skin and a portion of the underlying layer. It is characterized by redness, blistering, and pain, and usually heals without scarring.
Step-by-step explanation:
Superficial partial thickness refers to a type of burn injury that affects the outer layer of the skin, called the epidermis, and a portion of the underlying layer, called the dermis. It is characterized by redness, blistering, and pain. Superficial partial thickness burns usually heal within a few weeks without scarring.