Case Study

Case 31: A Rough Growth Around the Nail That Won't Heal — Periungual Warts and the Nail-Biting Connection

Quick Answer: A rough, raised, cauliflower-like growth around the nail fold is usually a periungual wart — a viral wart caused by the Human Papilloma Virus (HPV) occurring around fingernails and toenails. Common triggers are nail biting, picking, cuticle cutting, moist environments, and spread from existing warts. Treatment options include immunotherapy, electrocautery/radiofrequency, chemical cautery, cryotherapy, and autoinoculation techniques — and patients must never bite, pick, or cut the lesions themselves, which spreads the virus. Periungual warts are stubborn and can recur, so early treatment matters. Case Snapshot: A patient described an "under-nail growth not healing" and wasn't sure how to proceed. Images showed a rough raised growth hugging the nail fold — the characteristic look of a periungual wart, sitting in one of the most treatment-resistant locations warts can choose. What Makes Periungual Warts Special — and Stubborn Periungual warts are viral warts caused by HPV that grow around fingernails and toenails — on the nail folds, under the nail edge, or wrapping the nail margins. The location is the whole problem: the virus shelters in crevices that creams struggle to penetrate and destructive treatments struggle to reach without risking the nail unit itself. That is why these warts are notorious for persistence and recurrence, and why the guiding principle here is professional treatment, started early, before the colony expands under the nail plate. The Triggers Frequent trauma around the nails — nail biting and picking are the classic culprits, seeding HPV into the micro-wounds they create Cutting or damaging the cuticle during manicures — the cuticle is the nail's protective seal, and breaching it opens the door Moist environments and repeated hand exposure — wet work softens periungual skin Spread from existing warts by scratching — one hand wart becomes a ring of nail-fold warts via habitual picking How They Present Rough, cauliflower-like growths near the nail Thickened skin around the nail fold or right under the nail edge Pain with pressure, and in established cases deformed or lifted nails as the wart distorts the nail's growth platform Nail deformity is the escalation signal: once the wart burrows beneath the plate, treatment becomes harder and nail damage can persist — a strong argument against watchful waiting here. The Treatment Options Because of the tricky terrain, dermatologists select from a wider menu than for ordinary warts: Immunotherapy with a variety of immunomodulating agents — recruiting the immune system to clear the virus; particularly valuable around nails, where it treats without cutting near the nail matrix, and useful for multiple or recurrent warts Electrocautery or radiofrequency ablation — precise physical destruction in expert hands Chemical cautery — controlled chemical destruction for selected lesions Cryotherapy (liquid nitrogen) — freezing in staged sessions, carefully dosed near the nail unit Autoinoculation — a technique that deliberately exposes the immune system to wart tissue to trigger a body-wide clearance response Multiple sessions are routine, and combinations are common. Explore professional wart removal at Allodermis for a plan matched to your nails. The One Habit That Decides the Outcome Patients should avoid nail biting, picking, or cutting the lesions themselves — every bite and pick harvests virus onto the teeth, lips, and neighbouring fingers, which is precisely how one periungual wart becomes eight. For chronic nail-biters, treating the habit is treating the disease: keep nails trimmed short and smooth, use a bitter-taste deterrent polish, occupy the hands, and cover the treated wart so it can't be worried at. Manicure hygiene matters too — no cuticle cutting, and personal (never shared) nail tools. When to See a Dermatologist See a dermatologist early for any wart touching the nail: periungual warts can be stubborn and may recur, so early treatment is important — small early lesions clear far more easily than established under-nail colonies, and early care protects the nail from permanent deformity. Also seek review for any "wart" that bleeds, grows rapidly, or destroys nail — rare mimics of periungual warts need ruling out. Book a consultation here. FAQs Q: Can over-the-counter wart paints treat nail-fold warts? They struggle here — penetration is poor and strong keratolytics can damage the nail fold. Periungual warts are best treated in clinic. Q: Will my deformed nail recover after the wart is cleared? Usually yes, growing out normally over months, provided the nail matrix wasn't permanently damaged — another reason to treat early. Q: Why do my nail warts keep coming back? Persistent virus in adjacent skin plus ongoing biting/picking is the usual pair. Immunotherapy approaches and genuine habit change close the loop. Q: Are periungual warts contagious to family? Yes, like all warts — via direct contact and shared nail tools or towels. Personal tools and covered lesions during treatment protect the household. 📌 Case Study Reference: Publicly shared patient images and query, r/DermatologyQuestions, Reddit — "Under nail growth not healing and not sure how to…". Educational discussion only; not a final diagnosis. Clinical commentary by the Allodermis dermatology team.