Which of the following is a form of secondary lesion?

• A. Macule
• B. Bulla
• C. Keloid
• D. Papule

Answer: (C)

A keloid is indeed classified as a secondary lesion. Secondary lesions are those that develop later in the progression of a skin condition or as a result of changes from primary lesions. Keloids are formed when there is an abnormal proliferation of scar tissue that occurs at the site of an injury or incision. This excessive growth results in a raised and often irregular scar that extends beyond the original wound site.

Primary lesions, such as macules, bullae, and papules, are the initial changes in the skin and do not evolve from other lesions. For instance, a macule is a flat, discolored area, a bulla is a large fluid-filled blister, and a papule is a small, raised bump on the skin. Each of these primary lesions has distinct characteristics and does not indicate a reactive process like keloids do. Understanding the differentiation between primary and secondary lesions is crucial for effective diagnosis and treatment in esthetics and dermatology.