Which statement describes hair growth over scar tissue under the arm?

• A. Hair will not grow in the scar area
• B. Hair growth will be unpredictable
• C. Hair will grow normally
• D. Hair will grow twice as fast in the scar area

Answer: (A)

Scar tissue is made of dense, fibrous tissue that can replace normal skin and disrupt the hair follicles embedded in the dermis. Hair growth depends on intact follicles and adequate blood supply. When a scar forms, many follicles are destroyed or displaced, and the local blood flow changes, so new hair cannot be reliably produced in that area. That’s why hair does not grow in the scar region under the arm.

In contrast, normal hair growth requires preserved follicles, and scar tissue typically lacks them, so options suggesting normal or faster growth aren’t accurate. While a small amount of hair regrowth can occur if some follicles survive, the general expectation in scar tissue is absence of hair rather than predictable or accelerated growth.