Examining the same trauma patient who struck their chin on the floor, which injury in the image below is a skin ABRASION?

Correct answer: B. Diffuse area of roughened or scraped skin surface

• A. A raised fluid-filled vesicular lesion describes a blister or vesicle, not an abrasion caused by friction trauma.
• B. CORRECT. An abrasion is a superficial injury caused by friction against a rough surface, resulting in loss of the outer skin layer (epidermis) over a broad area. The surface appears raw, roughened, or scraped but does not penetrate the full skin thickness. This is the typical injury from sliding across a hard floor.
• C. A full-thickness irregular wound with disrupted edges describes a laceration, not an abrasion. Lacerations penetrate deeper than abrasions.
• D. A subcutaneous hematoma (bruise/ecchymosis) involves bleeding beneath intact skin, resulting in discoloration rather than surface skin loss.