Burns are typically classified based on their depth:
First-degree burns: These affect only the outer layer of the skin (epidermis) and cause redness, pain, and minor swelling. Second-degree burns: These extend into the second layer of skin (dermis) and cause blisters, severe pain, and redness. Third-degree burns: These penetrate deeper into the skin layers and may appear white, charred, or leathery. They are more serious and require immediate medical attention.