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Background: Hailey-Hailey disease is a rare autosomal dominant genodermatosis whose cause is the ATP2C1 gene mutation. A prevalence of 1 in 50,000 cases is estimated and it manifests as grouped flaccid vesicles that break easily. The diagnosis is confirmed with the histopathological study creating an appearance called "dilapidated brick wall", identifying dyskeratosis in the form of round bodies and pimples. Treatment ranges from general measures to multiple pharmacological options, with topical corticosteroids being the most commonly used. Clinical case: Male patient diagnosed with Hailey-Hailey disease. On physical examination we observed a dermatosis disseminated to the neck, trunk, axillary and inguinal folds, and intergluteal region, unilateral, asymmetric with a polymorphous appearance, constitution due to exulceration, erythema, some pustules and flaccid vesicles that coalesced to form eczematous and hypertrophic plaques with the presence of fine scales on their surface, with a chronic evolution accompanied by pruritus. We also took the opportunity to review the most relevant information in the literature regarding Hailey-Hailey disease, especially focused on the therapeutic aspect. Conclusions: It is important to take into account that Hailey-Hailey disease is a rare pathology, in order to make a differential diagnosis in daily clinical practice.

Introducción: la enfermedad de Hailey-Hailey es una rara genodermatosis autosómica dominante cuya causa es la mutación del gen ATP2C1. Se estima una prevalencia de 1 por cada 50,000 casos y se manifiesta como vesículas flácidas agrupadas que se rompen con facilidad. El diagnóstico se confirma con el estudio histopatológico que crea una apariencia denominada "pared de ladrillo dilapidada" y se identifica disqueratosis en forma de cuerpos redondos y granos. El tratamiento comprende desde medidas generales hasta múltiples opciones farmacológicas y los corticoesteroides tópicos son los más utilizados. Caso clínico: paciente del sexo masculino con diagnóstico de enfermedad de Hailey-Hailey. A la exploración física observamos una dermatosis diseminada a cuello, tronco, pliegues axilares, inguinales y región interglútea, de manera unilateral, asimétrica, de aspecto polimorfo, constituida por exulceración, eritema, algunas pústulas y vesículas flácidas que confluían para formar placas eccematosas e hipertróficas con escama fina, de evolución crónica, acompañada de prurito. Además, aprovechamos la oportunidad para revisar la informacion más relevante en la literatura con respecto a la enfermedad de Hailey-Hailey, especialmente enfocados en el aspecto terapéutico.es importante tener en cuenta que la enfermedad de Hailey-Hailey es una patología rara, a fin de hacer un diagnóstico diferencial en la práctica clínica rutinaria.

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Hailey-Hailey disease is a rare genodermatosis described in 1939, with an autosomal dominant inheritance pattern, characterized by compromised adhesion between epidermal keratinocytes. It has an estimated prevalence of 1/50,000, with no gender or race predilection. It results from a heterozygous mutation in the ATP2C1 gene, which encodes the transmembrane protein hSPA1C, present in all tissues, with preferential expression in keratinocytes. Mutations in the ATP2C1 gene cause changes in the synthesis of junctional proteins, leading to acantholysis. It usually begins in adulthood, with isolated cases at the extremes of life. It manifests as vesico-bullous lesions mainly in the flexural areas, which develop into erosions and crusts. Chronic lesions may form vegetative or verrucous plaques. Pruritus, a burning feeling and pain are common. It evolves with periods of remission and exacerbation, generally triggered by humidity, friction, heat, trauma and secondary infections. The diagnosis is based on clinical and histopathological criteria: marked suprabasal acantholysis, loosely joined keratinocytes, giving the appearance of a "dilapidated brick wall", with a few dyskeratotic cells. The acantholysis affects the epidermis and spares the adnexal epithelia, which helps in the differential diagnosis with pemphigus vulgaris. Direct immunofluorescence is negative. The main differential diagnoses are Darier disease, pemphigus vegetans, intertrigo, contact dermatitis, and inverse psoriasis. There is no cure and the treatment is challenging, including measures to control heat, sweat and friction, topical medications (corticosteroids, calcineurin inhibitors, antibiotics), systemic medications (antibiotics, corticosteroids, immunosuppressants, retinoids and immunobiologicals) and procedures such as botulinum toxin, laser and surgery. There is a lack of controlled clinical trials to support the choice of the best treatment.

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Las enfermedades perianales del adulto, de carácter no infeccioso y no neoplásico, son un motivo de consulta poco frecuente. Se caracterizan por la variedad de su etiología y de su sintomatología clínica, y plantean dificultad en el diagnóstico y en la terapéutica. El objetivo del presente trabajo es abordar una patología que plantea la necesidad de una intervención interdisciplinaria. Se incluyen consideraciones anatomopatológicas, clínicas y terapéuticas. (AU)

Noninfectious, non- neoplasic perianal affections are uncommon diseases. They are characterized by the variety of the etiology and clinical symptomatology, posing difficulty in diagnosis and therapeutics. The objective of this paper is to address a pathology that raises the need for interdisciplinary intervention anatomopathological, clinical and therapeutic considerations are included. (AU)

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INTRODUCCIÓN: Las enfermedades acatólicas son un grupo heterogéneo de enfermedades que presentan como característica central histopatológica la acantosis. Generalmente presentan un curso de evolución crónica y recidivante, con variadas manifestaciones clínicas. OBJETIVO: caracterizar los pacientes con diagnóstico de enfermedad acantolítica, bajo 5 criterios clínicos y realizar una revisión de la literatura. MÉTODOS: Se realizó una revisión de la base de datos del Servicio Anatomía Patológica del Hospital San Borja Arriaran (HSBA) entre los años 2007 y 2017 y se complementaron con los antecedentes clínicos extraídos de las fichas clínicas.RESULTADOS: Se obtuvo un total de 13 casos. el 53,8% correspondieron a enfermedad de Darier, 20,6% a enfermedad de Hailey-Hailey y un 20,6% a enfermedad de Grover, obteniendo un promedio de edad al momento del diagnóstico de 22,5 años, 44,3 años y 47,6 años respectivamente. Los antecedentes familiares estuvieron presentes en el 53,8% del total de pacientes, ninguno de ellos presentaba estudio genético. El 61,5% de la muestra correspondió a pacientes de sexo femenino y el promedio de años de evolución previo al diagnóstico fue de 7,4 años para Darier, 8,6 para Hailey-Hailey y para Grover. El 100% de los pacientes con enfermedad de Darier y Grover estaban con terapia sistémica y el 66,6% de enfermedad de Hailey-Hailey con terapia tópica, todos con adecuada respuesta clínica. DISCUSIÓN y conclusiones: las enfermedades acantolíticas corresponden a genodermatosis poco frecuente cuyo diagnóstico y tratamiento constitu-yen un desafío para el dermatólogo

INTRODUCTION: Atytolic diseases are a heterogeneous group of diseases that present acanthosis as a histopathological central characteristic. They usually present a course of chronic and recurrent evolution, with varied clinical manifestations. OBJECTIVE: to characterize the patients diagnosed with acantholytic disease, with 5 clinical criteria and to carry out a review of the literature. METHODS: A review of the database of the Pathological Anatomy Service of the San Bor-ja Arriaran Hospital (HSBA) between 2007 and 2017 was carried out and complemented with the clinical records extracted from the clinical files. RESULTS: A total of 13 cases were obtained. 53.8% corresponded to Darier's disease, 20.6% to Hailey-Hailey's disease and 20.6% to Grover's disease, obtaining an average age at diagnosis of 22.5 years, 44.3 years and 47.6 years respectively. Family history was present in 53.8% of the to-tal patients, none of them had a genetic study. 61.5% of the sample corresponded to female patients and the average of years of evolution prior to diagnosis was 7.4 years for Darier, 8.6 for Hailey-Hailey and for Grover. 100% of the pa-tients with Darier and Grover's disease were on systemic therapy and 66.6% of Hailey-Hailey's disease with topical therapy, all with adequate clinical response. DISCUSSION AND CONCLUSIONS: acantholytic diseases correspond to rare genodermatosis whose diagnosis and treatment constitute a challenge for the dermatologist.

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El pénfigo familiar benigno o enfermedad de Hailey Hailey, es una genodermatosis vesico-ampollar autosómica dominante, con penetrancia incompleta y expresividad variable de presentación infrecuente. Se presenta el caso de un paciente con un cuadro de cinco años de evolución, caracterizado por lesiones vesiculares intertriginosas, de olor desagradable, con mala respuesta al tratamiento tópico con antifúngicos y corticoides. Se realiza biopsia de piel compatible con pénfigo de Hailey Hailey, el que fue manejado con antibióticoterapia y corticoides sistémicos, evolucionando favorablemente.

The benign familial pemphigus or Hailey Hailey´s disease is a rare autosomal dominant disorder. We present the clinical case of a patient with a five years history, characterized by vesicular intertriginous malodorous lesions with poor response to topical antifungal therapy. Skin biopsy it was compatible with Hailey Hailey´s disease which was managed with antibiotic therapy and systemic corticosteroids. The patient evolved favorably.

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Introducción: La enfermedad de Hailey-Hailey (pénfigo crónico familiar benigno) es una dermatosis ampollar, de evolución crónica, recidivante, autosómica dominante, de penetrancia y expresividad variables, localizada predominantemente en los pliegues. Métodos: Se realizó una revisión de la base de datos del Servicio Anatomía Patológica del Hospital Clínico Universidad de Chile (HCUCH) entre los años 2001 y 2016 y se complementaron con los antecedentes clínicos extraídos de las fichas clínicas. Resultados: Se obtuvo un total de 6 casos ilustrativos de la patología en estudio. Discusión y conclusiones: La enfermedad de Hailey-Hailey es una genodermatosis poco frecuente cuyo diagnóstico y tratamiento constituyen un desafío para el dermatólogo.

Background: The Hailey-Hailey disease (familial benign chronic pemphigus) is a bullous dermatosis, with chronic and recurrent evolution, autosomal dominant with variable penetrance and expressivity, localized predominantly in the folds. Methods: A review of the database of the Anatomic Pathology Service of the Hospital Clínico Universidad de Chile (HCUCH) between 2001 and 2016 was carried out and supplemented with the clinical history extracted from the clinical records. Results: A total of 6 illustrative cases of the pathology under study were obtained. Discussion and conclusions: Hailey-Hailey's disease is a rare genodermatosis whose diagnosis and treatment is a challenge for the dermatologist.

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El pénfigo familiar benigno (Enfermedad de Hailey-Hailey) es una rara genodermatosis localizada en pliegues, que cursa en brotes con ardor y prurito localizado predominantemente en verano. Presentamos dos pacientes con Enfermedad de Hailey-Hailey de diagnóstico tardío(AU)

Benign familial pemphigus (Hailey-Hailey disease) is a rare genodermatosis located in folds, which presents in outbreaks with burning and itching predominantly in summer. Two patients with Hailey-Hailey disease of late diagnosis are reported (AU)

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Hailey-Hailey disease (HHD) is an autosomal dominant disorder in which the ATP2C1 gene has been implicated. Many mutations of this gene have been detected in HHD patients. To analyze such mutations in HHD and summarize all those identified in Chinese patients with this disease, we examined four familial and two sporadic cases and searched for case reports and papers by using the Chinese Biological Medicine Database and PubMed. HHD diagnoses were made based on clinical features and histopathological findings. Polymerase chain reaction and direct sequencing of the ATP2C1 gene were performed using blood samples from HHD patients, unaffected family members, and 120 healthy individuals. Three mutations were identified, including the recurrent mutation c.2126C>T (p.Thr709Met), and two novel missense mutations, c.2235_2236insC (p.Pro745fs*756) and c.689G>A (p.Gly230Asp). Considering our data, 81 different mutations have now been reported in Chinese patients with HHD. In cases of misannotation or duplication, previously published mutations were renamed according to a complementary DNA reference sequence. These mutations are scattered throughout the ATP2C1 gene, with no evident hotspots or clustering. It is of note that some reported "novel" mutations were in fact found to be recurrent. Our findings expand the range of known ATP2C1 sequence variants in this disease.

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O objetivo deste trabalho é relatar o caso de mulher, 44 anos, branca (fototipo 3), apresentando placas eritemato-violáceas com vesículas rompidas, maceração e odor intenso e desagradável em ambas as axilas e região inguinal, com início há dez anos. Foi diagnosticado Pênfigo Crônico Familiar Benigno ou doença de Hailey-Hailey, uma genodermatose autossômica dominante rara desencadeada por mutação no cromossomo 3q21-24 (AU)

The aim of this study is to report the case of a 44-year-old white (skin type 3) woman presenting with erythematous-violaceous plaques with ruptured vesicles, maceration, and intense and unpleasant odor in both armpits and groin, starting ten years ago. Benign familial chronic pemphigus, or Hailey-Hailey disease, a rare autosomal dominant genodermatosis triggered by a mutation on chromosome 3q21-24, was diagnosed (AU)

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