PSI Barbering Practice Exam 2026 - Free Barbering Practice Questions and Study Guide

A keloid scar is formed due to the excessive growth of fibrous tissue in response to injury or trauma to the skin. When the skin is damaged, the body initiates a healing process that involves the production of collagen to repair the wounded tissue. In some individuals, this healing process becomes overactive, leading to the accumulation of excessive collagen and the formation of a keloid. This type of scar extends beyond the original wound and can be raised and thick compared to surrounding skin.

The other types of tissue mentioned do not contribute to the formation of keloid scars. Adipose tissue, which is primarily fat tissue, does not play a role in scar formation. Cartilage is a flexible connective tissue found in various parts of the body, such as joints, and is also unrelated to scar development. Epithelial tissue, which covers the body's surfaces and lines cavities, is involved in the initial healing process but does not contribute to the formation of keloids. Therefore, the corrective answer directly links keloid development to the growth of fibrous tissue.