Arizona Esthetics State Board Practice Exam

What type of secondary lesion is a dried mass that remains after an oozing sore?

1. Scale

2. Crust

3. Scar

4. Erosion

The correct answer is: Crust

A dried mass that remains after an oozing sore is known as a crust. This secondary lesion forms when the fluid from the sore, which may contain serum, blood, or pus, dries and hardens. Crusts are often seen on the skin as a protective layer that forms over a healing wound or injury. They can be a sign of the body’s healing process, indicating that the body is trying to protect the area from further infection and facilitate recovery. Other secondary lesions include scales, which are flake-like and result from excess dead skin buildup; scars, which are fibrous tissues that replace normal skin after injury; and erosions, which refer to a loss of superficial layers of skin without significant bleeding. The distinct characteristic of a crust, as opposed to these other types of lesions, is its formation from the drying of exudate, emphasizing its role in the healing process following an oozing injury.