A patient being seen for an elevated, darkened area of excess scar tissue asks the nurse what caused it. How should the nurse respond?
1. "This scar was caused by the wearing away of the superficial epidermis, which left a moist, shallow depression."
2. "This scar was caused by excessive collagen formation during healing."
3. "This scar was caused by skin loss extending into the dermis or subcutaneous tissue."
4. "This scar was caused by wasting of the skin due to loss of collagen."
Correct Answer: 2
Erosion is the wearing away of the superficial epidermis, causing a moist, shallow depression. Because erosions do not extend into the dermis, they heal without scarring. A keloid is an elevated, irregular area of excess scar tissue caused by excessive collagen formation during healing. It extends beyond the site of the original injury. An ulcer is a deep, irregularly shaped area of skin loss extending into the dermis or subcutaneous tissue. Atrophy is a translucent, dry-paper-like, sometimes wrinkled skin surface resulting from thinning or wasting of the skin due to loss of collagen and elastin.
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