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What is an Excoriation?

  1. Shedding of dead skin cells

  2. Formation resulting from a lesion

  3. Mechanical abrasion of the epidermis

  4. Crack or like in the skin

The correct answer is: Mechanical abrasion of the epidermis

An excoriation is a type of skin injury or wound caused by skin rubbing or scratching against a rough surface. This results in the removal or erosion of the top layer of skin, also known as the epidermis. Option A, shedding of dead skin cells, is a natural process and not considered an injury. Option B, formation resulting from a lesion, is too broad and vague for the definition of an excoriation. Option D, a crack or like in the skin, could potentially be an excoriation, but it does not specify the cause of the injury. Only option C accurately describes the mechanism and characteristics of an excoriation.