Answer:
First-degree burns affect only the outer layer of the skin. They cause pain, redness, and swelling.
Second-degree burns affect both the outer and underlying layer of skin. They cause pain, redness, swelling, and blistering. ...
Third-degree burns affect the deep layers of skin. They are also called full thickness burns. They cause white or blackened, burned skin. The skin may be numb.
Explanation:
to sum it up the similarities are, it affects the layers of the skin
