Final answer:
A partial thickness burn can be differentiated from a superficial burn by the presence of blisters. Superficial burns affect only the epidermis, while partial thickness burns affect both the epidermis and the dermis.
Step-by-step explanation:
To differentiate a partial thickness burn from a superficial burn, you would look for the presence of blisters. Superficial burns, also known as first-degree burns, only affect the epidermis, the top layer of skin. They may result in pain and swelling, but typically do not form blisters and heal on their own within a few days. Partial thickness burns, or second-degree burns, go deeper, affecting both the epidermis and part of the dermis. Key characteristics of second-degree burns include swelling and painful blistering of the skin.
An individual who has spent too much time sunbathing and has developed small blisters and skin that is painful to touch has experienced damage to both the epidermis and the dermis layers of skin, indicating a partial thickness or second-degree burn. It's important to keep the burn site clean and sterile to prevent infection, which can then heal within several weeks.