Scarring Alopecia: Lichen Planopilaris, FFA and the Limits of Surgery
Scarring alopecia destroys the follicle itself. Why a transplant rarely works in active disease, and where SMP comes in.
When the Follicle Itself Is Destroyed
Most hair loss conditions miniaturise or temporarily inactivate the follicle. Scarring alopecias destroy it — replacing the follicular structure with scar tissue. Once that happens, no medication and no transplant will produce regrowth in that location.
The challenge is that scarring alopecias are often slow, painless, and only detected after meaningful loss. Early diagnosis matters because medical treatment can stop progression — even though it cannot reverse what is already gone.
The Main Subtypes
You may hear the umbrella term "primary cicatricial alopecia." The clinically important subtypes are:
- Lichen planopilaris (LPP) — patchy, itchy, often scalp burning sensation
- Frontal fibrosing alopecia (FFA) — slow recession of the frontal hairline, often eyebrows too, predominantly women
- Central centrifugal cicatricial alopecia (CCCA) — circular crown thinning, often in women of African descent
- Folliculitis decalvans — bacterial-driven, with pustules and crusting
- Discoid lupus erythematosus — autoimmune, often with red plaques
Why Surgery Is Risky in Active Disease
Transplanted follicles enter the same inflammatory environment that destroyed the native ones. Most grafts placed during active disease fail. Even when stable, the affected scalp may have compromised vascularity, lower graft survival, and a higher risk of triggering a flare.
The general rule: at least 18–24 months of clinically and dermoscopically confirmed inactivity before any surgical plan.
Where SMP Comes In
SMP does not depend on follicle survival. Pigment is placed in the dermis, the dermis is intact, and the visual outcome is independent of whether any new hair grows. For stable scarring alopecia patients, SMP is often the most cost-effective camouflage option.