The Bottom Line

Lichen planopilaris (LPP) is an autoimmune condition where the body's immune system attacks hair follicles, causing permanent scarring and hair loss. It affects roughly 1–3% of people with alopecia worldwide and is more common in African, Hispanic, and Asian populations. The key message: early treatment matters enormously. Once a follicle is scarred, it cannot regrow hair — but treatment started during the active inflammatory phase can stop the damage from spreading. If you have scalp burning, redness around hair follicles, or patchy hair loss, see a dermatologist promptly.

What Is Lichen Planopilaris?

Lichen planopilaris (LPP) is a form of scarring alopecia — meaning it causes permanent hair loss by destroying hair follicles. It is the scalp version of lichen planus, a skin condition caused by a misdirected immune attack. In LPP, immune cells (specifically T-lymphocytes) target the upper portion of hair follicles, destroying the follicular epithelium and sebaceous glands. Once these structures are replaced by scar tissue, new hair cannot grow.

About 15–30% of people with LPP also have lichen planus elsewhere — on the skin, nails, or in the mouth — which makes sense given the shared autoimmune mechanism. Genetic markers HLA-A3 and HLA-B7 are associated with increased susceptibility in some populations.

What Are the Symptoms?

LPP is one of the few hair conditions that causes noticeable scalp symptoms before or alongside the hair loss:

  • Burning or itching around individual follicles — often the first symptom, and can be striking even when hair loss is minimal
  • Perifollicular erythema — redness forming a ring around individual hair follicles
  • Follicular hyperkeratosis — small, rough, scale-like plugs surrounding hair shafts at the scalp surface
  • Patchy hair loss — most commonly on the crown and top of the scalp; patches are irregular, not perfectly round
  • Shiny, smooth skin in areas where follicles have been destroyed and replaced by scar tissue

Symptoms tend to fluctuate — active inflammatory periods with more burning and shedding alternate with quieter phases. This variability can make it hard to judge disease activity without a scalp exam.

Why Early Treatment Matters So Much

LPP has two stages, and the difference between them is critical:

  • Early stage (active inflammation): The follicle is under attack but not yet fully destroyed. Anti-inflammatory treatment can halt the process and preserve follicles. This is the window of opportunity.
  • Late stage (established fibrosis): The follicle has been replaced by scar tissue. At this point, no medication can reverse the damage. The hair loss in these areas is permanent.

This is why getting an early biopsy during active inflammation — rather than waiting until hair loss is extensive — is so important. Delayed treatment significantly reduces the chance of stopping progression.

How Is It Diagnosed?

The diagnosis of LPP is established by scalp biopsy, which shows the characteristic pattern: a dense band of lymphocytes surrounding the upper follicle (the infundibulum and isthmus), with preservation of the lower follicle bulb. This distinguishes LPP from folliculitis decalvans (neutrophilic pattern) and discoid lupus (interface dermatitis pattern).

Dermoscopy (a magnifying instrument used on the scalp surface) shows:

  • Perifollicular scale (scaling around each hair shaft)
  • Peripilar erythema (redness around follicles)
  • Loss of follicular openings in scarred areas
  • Absence of the fine vellus hairs normally present in non-scarring conditions

Blood tests are generally not diagnostic for LPP itself, but may be ordered to rule out other conditions (lupus, thyroid disease) and to monitor for medication side effects.

Treatment Options

Topical treatments (first-line for mild disease)

  • Potent topical corticosteroids (fluocinonide 0.05% solution or cream) applied directly to active areas 2–3 times daily — reduce peripilar inflammation and slow progression; about 30–50% of patients with early-stage disease stabilize on topical agents alone
  • Topical tacrolimus 0.1% — a steroid-free alternative applied twice daily; particularly useful for long-term maintenance or in patients who develop steroid side effects

Intralesional corticosteroids

Intralesional triamcinolone acetonide (5–10 mg/mL injected into active areas monthly) achieves superior penetration at the follicular level compared to topical application. This is often combined with topical treatments.

Systemic treatments (for active or progressive disease)

  • Hydroxychloroquine (200–400 mg daily) — the most widely used systemic agent for LPP; suppresses the aberrant immune response; requires 3–6 months to assess response; annual eye exams are needed to monitor for rare retinal effects
  • Oral corticosteroids — used for rapid control of severe flares; not appropriate for long-term use due to side effects
  • Mycophenolate mofetil or cyclosporine — immunosuppressants used for patients not responding to hydroxychloroquine
  • Oral retinoids (acitretin) — used in some refractory cases, particularly when sebaceous gland involvement is prominent
  • Pioglitazone (a PPAR-gamma agonist) — emerging evidence supports its use in LPP; some studies show meaningful improvement in symptoms and halted progression

When to See a Dermatologist

  • You have burning or itching on the scalp, particularly around individual hair follicles
  • You notice redness forming rings around hair shafts
  • Hair is falling out in patches, especially on the crown, with smooth skin at the bald areas
  • You have been diagnosed with lichen planus on the skin or in the mouth and also have scalp symptoms
  • Hair loss is worsening despite standard dandruff treatments
  • Any scalp condition that seems to be spreading or not responding to OTC products

Frequently Asked Questions

Is lichen planopilaris curable?

LPP cannot be cured in the traditional sense — the underlying autoimmune tendency remains. However, it can go into long-term remission with treatment. The goal is to stop active inflammation, preserve the remaining follicles, and ideally reach a point where disease activity is minimal or absent. Some patients achieve years-long remission; others need ongoing maintenance therapy.

Can the bald patches from LPP grow hair again?

Areas where follicles have been completely replaced by scar tissue will not regrow hair. However, if treatment is started before full follicle destruction, further hair loss can be halted, and hairs at the border of active disease may be preserved. Some patients also explore hair transplantation in stable (non-active) scarred areas, though this requires careful timing and specialist evaluation.

Is LPP related to regular lichen planus on the skin?

Yes — they share the same autoimmune mechanism: T-lymphocytes mistakenly attacking skin cells. About 15–30% of LPP patients also have lichen planus on the skin surface, nails, or inside the mouth. If you have LPP, your dermatologist will check other areas for signs of systemic lichen planus.

How often should I see my dermatologist if I have LPP?

During active disease and when starting or adjusting treatment, visits every 2–3 months are typical. Once disease is controlled, 6-month follow-ups are common. Regular monitoring is important because disease activity can change, and treatment adjustments may be needed. If on hydroxychloroquine, annual eye exams are also recommended.

References

  1. Chieregato C, et al. Lichen planopilaris: report of 30 cases and review of the literature. Int J Dermatol. 2003;42(5):342–345.
  2. Cevasco NC, et al. A case-series of 29 patients with lichen planopilaris. J Am Acad Dermatol. 2007;57(1):47–54.
  3. Assouly P, Reygagne P. Lichen planopilaris: update on diagnosis and treatment. Semin Cutan Med Surg. 2009;28(1):3–10.
  4. Anzai A, et al. Pioglitazone for the treatment of lichen planopilaris. J Am Acad Dermatol. 2019;80(2):379–384.
  5. Baibergenova A, Walsh S. Use of pioglitazone in patients with lichen planopilaris. J Cutan Med Surg. 2012;16(2):97–100.

Trusted Resources

Always consult a board-certified dermatologist for diagnosis and personalized treatment recommendations. This article is for educational purposes and does not replace professional medical advice.