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https://doi.org/10.1177/1203475419843122
Journal of Cutaneous Medicine and Surgery
2019, Vol. 23(4) 453 –454
© The Author(s) 2019
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DOI: 10.1177/1203475419843122
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Introduction
Darier (DD) and Hailey-Hailey (HHD) diseases are both
genodermatoses caused by defective calcium transport and
homeostasis. DD is caused by a mutation of the ATPA2A
gene and HHD by a mutation of the ATP2C1 gene. Clinically,
the former is characterized by itchy, painful macerations
with red-brownish papules in a seborrheic distribution; the
latter manifests with painful blisters that rupture, leaving
erosions in intertriginous areas. Treatment options for both
conditions are limited and include topical steroids, systemic
steroids, retinoids, antibiotics, topical aminoglycosides, as
well as dapsone and immunosuppressive therapies.1-3 One
additional promising and novel therapeutic option for these
diseases is naltrexone.
Naltrexone is a long-lasting opiate receptor antagonist. In
dermatology it is used in recalcitrant chronic pruritis or neu-
rodermatoses such as prurigo nodularis. The exact mecha-
nism of action in these conditions is unknown, but it is
thought to be due to its anti-inflammatory and antianalgesic
effects.4 Naltrexone is a known Toll-like receptor 4 antago-
nist, which leads to decreased amounts of TNF-alpha, IL-6,
and nitric oxide. These effects are involved in calcium
homeostasis.1
Low-dose naltrexone (LDN) initiated at 3 mg nightly and
then maintained on 4.5 mg nightly showed significant
improvement in 3 patients with refractory HHD. These
patients previously failed topical, intralesional, and intra-
muscular steroids, along with failing oral and topical antibi-
otics. One of the 3 patients periodically discontinued and
then restarted the medication multiple times. Each time he
would develop lesions a few days after stopping and they
would resolve shortly after resuming naltrexone.1
Another set of 3 patients with HHD was treated with LDN:
Two showed a significant improvement with naltrexone alone
or in combination with topical regimens of tacrolimus and
corticosteroids. The third patient had mild improvement.
Interestingly, 1 of the patients who had significant improve-
ment was on 12.5 mg of naltrexone at that time and reported
slower healing of lesions than on the 4.5 mg dose.5
Another refractory patient with HHD had a dramatic
response to LDN at 4.5 mg daily. This patient failed topical
and oral steroids, prophylactic acyclovir and doxycycline,
dapsone, acitretin, and cyclosporine. In the report, 4 other
members of the same family responded well to LDN.1
Given the therapeutic success of naltrexone in HHD case
series, Boehmer et al recently explored the use of LDN in a
series of biopsy-proven DD patients. In this study, patients
were treated with LDN 4.5 mg and magnesium 200 mg once
daily. Authors supplemented the LDN with magnesium,
given that dysfunction of the SERCA2 calcium pump is
known to be magnesium dependent. Patients were followed
monthly for 12 weeks. Of 6 patients included in the study, 4
had a severe disease defined by a Physician Global
Assessment (PGA) score of 4, while 2 had mild-to-moderate
disease. Only those with mild-to-moderate disease demon-
strated clinical improvement. Of the 2 responders, 1 received
a concurrent treatment with oral acitretin, while the other
was not on any additional treatments.2
The use of LDN at 4.5 mg once daily in patients with HHD
has shown promise in early observational studies. In contrast
to the classic doses of 50-100 mg, LDN does not need any
laboratory monitoring and has a favourable safety profile,
with common side effects of vivid dreams and headache.1
Prior to LDN therapy, patients should be carefully screened
for recent use and/or prior dependence of opioids.1 Further
studies to assess the efficacy of naltrexone in low-dose or
higher doses in these 2 diseases are needed.
Declaration of Conflicting Interests
The authors declared no potential conflicts of interest with respect
to the research, authorship, and/or publication of this article.
Medical Letter
843122CMSXXX10.1177/1203475419843122Journal of Cutaneous Medicine and SurgeryJfri et al
research-article2019
1Division of Dermatology, McGill University Health Centre, Montreal
General Hospital, QC, Canada
Corresponding Author:
Elena Netchiporouk, Montreal General Hospital, McGill University Health
Centre, Department of Medicine, Division of Dermatology, 1650 Cedar
Ave, Montreal, QC H3G 1A4, Canada.
Email: elena.netchiporouk@mail.mcgill.ca
Naltrexone for the Treatment of Darier
and Hailey-Hailey Diseases
Abdulhadi Jfri1, Ivan V. Litvinov1,
and Elena Netchiporouk1
Keywords
Darier disease (DD), Hailey-Hailey disease (HHD), low-dose naltrexone (LDN), naltrexone
454 Journal of Cutaneous Medicine and Surgery 23(4)
Funding
The authors received no financial support for the research, author-
ship, and/or publication of this article.
ORCID iD
Abdulhadi Jfri https://orcid.org/0000-0003-3866-1421
References
1. Lee B, Elston D. The uses of naltrexone in dermatological con-
ditions [published online ahead of print December 21, 2018]. J
Am Acad Dermatol. doi:10.1016/j.jaad.2018.12.031
2. Boehmer D, Eyerich K, Darsow U, Biedermann T, Zink A.
Variable response to low-dose naltrexone in patients with
Darier disease: a case series [published online ahead of print
February 3, 2019]. J Eur Acad Dermatol Venereol. doi:10.1111/
jdv.15457
3. Kellermayer R, Szigeti R, Keeling KM, Bedekovics T, Bedwell
DM. Aminoglycosides as potential pharmacogenetic agents
in the treatment of Hailey-Hailey disease. J Invest Dermatol.
2006;126(1):229-231. doi:10.1038/sj.jid.5700031
4. Younger J, Parkitny L, McLain D. The use of low-dose naltrex-
one (LDN) as a novel anti-inflammatory treatment for chronic
pain. Clin Rheumatol. 2014;33(4):451-459. doi:10.1007/
s10067-014-2517-2
5. Cao S, Lilly E, Chen ST. Variable response to naltrexone
in patients with Hailey-Hailey disease. JAMA Dermatol.
2018;154(3):362-363. doi:10.1001/jamadermatol.2017.5463
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