Hailey-Hailey Disease (Benign Familial Pemphigus, Investigational Adjunct)

Investigational adjunct for refractory Hailey-Hailey disease; topical corticosteroids, topical antibiotics, topical calcineurin inhibitors, oral antibiotics, and (refractory) botulinum toxin or surgical interventions remain evidence-based.

Tier C — InvestigationalИсследовательское применениеLast updated: 2026-05-26 · Reviewed by ASH Editorial Board

Краткая информация для пациента

Есть ли FDA-допуск для этого показания?: Not FDA-cleared for Hailey-Hailey disease (benign familial pemphigus). FDA cleared medicinal leeches only for venous congestion in microsurgical reconstruction (K040187, June 2004). Use here is Tier C investigational.
Какие доказательства существуют?: Tier C (investigational). Hailey-Hailey is a rare autosomal-dominant disorder of ATP2C1 affecting intercellular adhesion. Evidence-based management is topical and intralesional corticosteroid for flares, topical and oral antibiotics for secondary bacterial infection, topical or oral antifungal for superimposed candidiasis, and for severe refractory disease ablative laser, botulinum toxin injection (reduces sweat that triggers flares), naltrexone, dapsone, or surgical excision and grafting of severely affected skin.
Основные риски: Bleeding from each bite site for 6 to 10 hours after the leech detaches
Iron-deficiency anemia from cumulative blood loss across multiple sessions
Aeromonas hydrophila wound infection from leech gut bacteria (uncommon outside reconstructive surgery, but possible)
Allergic reaction to leech saliva (rare; ranges from local itching to anaphylaxis)
Permanent Y-shaped bite-mark scars or hyperpigmentation at attachment sites
Local pain, bruising, swelling, or itching for 1 to 3 days after each session
Worsening of intertriginous fragility — Hailey-Hailey skin tears easily
Bacterial or fungal superinfection of leech bite sites
Triggering acantholysis spreading from bite sites
Кому не следует это рассматривать: Patients with active superinfection (bacterial or fungal — treat first)
Patients who have not tried topical corticosteroid, antimicrobials, and botulinum toxin
Patients with severe refractory disease who are candidates for ablative laser or surgery
Anyone on blood thinners such as warfarin, apixaban, rivaroxaban, dabigatran, heparin, or daily aspirin used for medical reasons
People with hemophilia or any other inherited bleeding disorder
Patients with severe anemia (hemoglobin under 10 g/dL)
People with an active infection at the planned application site
О чём спросить врача: Has my diagnosis been confirmed and superinfection ruled out by culture?
Have I tried botulinum toxin, naltrexone, or ablative laser?
What is the risk that bites worsen the fragility and trigger spreading lesions?
How will superinfection of bite sites be prevented?
What is the published evidence base for leeches in Hailey-Hailey?
What is the plan if a flare extends from bite sites?
Когда срочно обратиться за медицинской помощью: Bleeding from a bite site that soaks through more than one dressing per hour
Bleeding that continues more than 24 hours after the leech detached
Spreading redness, warmth, swelling, pus, or red streaks around any bite site
Fever over 38.0 C / 100.4 F, chills, or feeling suddenly unwell after a session
Hives, facial or tongue swelling, throat tightness, or any difficulty breathing
Sudden weakness, dizziness, fast heart rate, or fainting (possible severe blood loss)
Rapidly spreading raw or eroded skin with severe pain
Fever with skin tenderness suggesting Staphylococcal scalded skin or cellulitis
Vesicular eruption near affected skin (rule out eczema herpeticum)

Что это НЕ означает

It does not mean leech therapy is FDA-cleared for Hailey-Hailey — the only FDA clearance is venous congestion in microsurgical reconstruction (K040187, June 2004).
It does not address the underlying ATP2C1 genetic defect.
It does not replace botulinum toxin, ablative laser, or other established refractory-disease therapies.
It may worsen skin fragility and trigger spreading lesions.
It does not have controlled-trial evidence in this rare disease.

Перекрёстные ссылки безопасности

Clinical Profile

Category: dermatological
ICD-10: Q82.8
Safety tier: high

Evidence Summary

Hailey-Hailey disease (benign familial pemphigus) is an autosomal dominant acantholytic disorder caused by ATP2C1 mutations, producing recurrent flaccid vesicles and macerated erosions in intertriginous areas (axillae, groin, neck, perianal). Evidence-based stepwise management: friction and sweat reduction, topical mid-potency corticosteroids and topical antibiotics for flares, topical calcineurin inhibitors as steroid-sparing agents, oral antibiotics or antivirals for superinfection, and (refractory) intradermal botulinum toxin, ablative laser, dermabrasion, or surgical excision and grafting. No published controlled trials of hirudotherapy exist for Hailey-Hailey disease. Intertriginous skin is moist, fragile, and frequently superinfected with bacteria or HSV, making leech placement both technically difficult and high-risk for triggering acantholysis (a Koebner-like response).

Treatment specifics

How many leeches, where they are placed, how long a session lasts, and whether to repeat are clinical decisions made by a qualified provider under institutional protocol — not something to self-administer. Discuss the specifics with a clinician experienced in medicinal leech therapy. (Clinicians: switch the audience selector in the top bar to “Clinician” to view protocol detail.)

Contraindications

Active anticoagulant therapy (warfarin INR >2.0, DOACs, heparin)
Hemophilia or other bleeding disorder
Severe anemia (Hb <10 g/dL)
Active bacteremia or sepsis
Known hypersensitivity to leech salivary proteins
Pregnancy (relative — first/third trimester)
Immunocompromised state with severe neutropenia
Intertriginous placement (axilla, groin, inframammary, neck flexure) — absolute
Active bacterial, fungal, or HSV superinfection
Recent botulinum toxin or ablative laser treatment
Koebner phenomenon — any skin trauma may trigger new acantholysis

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