Key Takeaways
- Stability first: no new/enlarging macules for ≥6–12 months, quiet Wood’s-lamp rim, and no Koebner activity.
- Best sites: face/neck > trunk/limbs > acral. Leukotrichia benefits from hair-bearing graft options (e.g., FUE).
- Technique choice: suction blister for color match and low cobblestoning; punch/minigrafts for small focal gaps; FUE for hairy areas and leukotrichia.
- Adjuncts: NB-UVB/excimer post-op to consolidate islands and blend borders.
Indications, Contraindications & Stability
- Indications: stable segmental/focal NSV, small-to-moderate patches, refractory rims, leukotrichia, facial/neck priority lesions.
- Contraindications: active disease (positive VIDA, confetti at rim), keloid tendency, infection, poor adherence to post-op care.
- Stability check: photos + Wood’s lamp at two visits 3–6 months apart; no new lesions/expansion.
Suction Blister Epidermal Grafting (SBEG)
- Principle: negative pressure (200–400 mmHg) creates epidermal blisters on donor site (thigh/hip); roofs are transplanted to dermabraded recipient.
- Steps: mark; anesthesia; suction (60–120 min); harvest roofs; dermabrade recipient to pinpoint bleeding; place grafts; secure with non-adherent dressing.
- Pros: excellent color match, minimal cobblestoning.
- Cons: time-consuming; limited area per session.
Punch/Minigrafting
- Principle: 1–2 mm punches transferred from donor to depigmented field in a grid (typically 5–10 mm spacing).
- Pros: simple instrumentation; good for small focal patches and “peppering” islands.
- Cons: risk of cobblestoning, polka-dot appearance if spacing/size suboptimal; color mismatch on acral.
- Pearls: smaller punches (≤1.5 mm), tight hemostasis, adequate spacing, and post-op NB-UVB to blend.
FUE-Grafting for Leukotrichia/Scalp
- Principle: follicular units (FU) harvested and implanted into depigmented skin; follicular melanocyte reservoir aids repigmentation.
- Use cases: leukotrichia on face/brow/moustache, scalp margins, and select acral with hair-bearing potential.
- Pros: addresses white hairs and skin simultaneously; durable islands from follicles.
- Cons: requires FUE skillset; donor scarring risk if overharvested.
Aftercare & Adjuvant Phototherapy
- Immobilize graft site 7–10 days; avoid friction/pressure.
- Start NB-UVB or excimer 308 nm after epithelialization (e.g., 2–3 weeks) to accelerate islands and blend borders.
- Consider tacrolimus 0.1% on face/neck for maintenance after fill-in.
Outcomes by Site (framework)
| Technique | Face/Neck | Trunk/Limbs | Acral | Notes |
|---|---|---|---|---|
| SBEG | High | Moderate–high | Variable | Best color match |
| Punch/minigraft | Moderate | Moderate | Low–moderate | Watch for cobblestoning |
| FUE | High (hair-bearing) | Moderate | Selective | Leukotrichia benefit |
Complications & Troubleshooting
| Issue | Technique | Prevention/Action |
|---|---|---|
| Graft displacement | All | Secure dressing; immobilize; educate on pressure avoidance |
| Cobblestoning | Punch | Use ≤1.5 mm punches; adequate spacing; gentle dermabrasion |
| Color mismatch | All | Prefer SBEG on face; adjuvant NB-UVB to blend |
| Donor scarring | FUE/Punch | Conservative harvest; hemostasis; proper aftercare |
| Infection | All | Asepsis; early review if pain/ooze; short antibiotics if indicated |
