PSI Barbering Practice Exam 2025 – All-in-One Resource to Master Your Certification!

A thick scar resulting from excessive growth of fibrous tissue is known as a keloid. Keloids develop when the body produces too much collagen during the healing process, leading to a scar that extends beyond the original injury site. These scars can be raised, thick, and may continue to grow over time. Keloids are often more prominent in individuals with darker skin tones and can cause discomfort such as itching or pain.

In contrast, hypertrophic scars, while also raised and related to excess collagen formation, remain within the boundaries of the initial injury site and may improve over time. Scarring alopecia refers to a condition where inflammation leads to permanent hair loss and scalp scarring. Atrophic scars are sunken or depressed scars that occur due to loss of underlying tissue, often resulting from conditions such as acne or chickenpox. Each type of scar has distinct characteristics and implications for treatment, with keloids requiring specific management due to their continued growth and potential for recurrence after removal.