Eccrine nevus is an extremely rare benign cutaneous hamartoma that usually occurs in childhood and adolescence. It has a wide range of clinical manifestations, and histological findings reveal a proliferation of structurally normal eccrine ducts. Herein, we present a case of eccrine nevus on the neck of an 8-year-old girl. Our literature review reveals that the head and neck region is a rare anatomical location for eccrine nevus as it has a predilection for extremities. Our review also suggests that overlying skin changes are common in eccrine nevus regardless of accompanying localized hyperhidrosis.

Eccrine nevus is an extremely rare benign cutaneous hamartoma that usually occurs in childhood and adolescence. It has a wide range of clinical manifestations, and histological findings reveal a proliferation of structurally normal eccrine ducts. Herein, we present a case of eccrine nevus on the neck of an 8-year-old girl. Our literature review reveals that the head and neck region is a rare anatomical location for eccrine nevus as it has a predilection for extremities. Our review also suggests that overlying skin changes are common in eccrine nevus regardless of accompanying localized hyperhidrosis.

Background: Cutis marmorata telangiectatica congenita (CMTC) is a rare congenital cutaneous anomaly characterized by persistent reticular skin lesion with a blue to purple color change. While the natural prognosis of the disease is generally considered good, limited data are available regarding the natural course of Korean patients with CMTC. Objective: To investigate the clinical features and natural course of Korean patients with CMTC. Methods: We performed a single-center retrospective study of 34 Korean patients diagnosed with CMTC at our institution between January 1999 and June 2019. Results: A slight female predominance was observed (male:female ratio, 1：1.4) and 82.4% of the patients were diagnosed before 2 years of age. Body asymmetry (32.4%) and other vascular anomalies (14.7%) were the two anomalies most frequently associated with CMTC. Most of the skin lesions developed on the lower extremities (67.6% lower extremity only, 20.6% lower extremity and other body regions) and 85.3% of the lesions occurred unilaterally. Among 25 patients with one or more follow-up evaluations, 20 (80.0%) showed spontaneous fading of the skin lesion. However, none showed a complete resolution. Finally, statistical analysis did not reveal any significant variable associated with the natural prognosis of CMTC. Conclusion Korean patients with CMTC had similar clinical features and natural course as those described in the previous literature. Notably, a greater portion of the patients showed improvement in skin lesions compared to those in previous studies. However, complete resolution of the skin lesion seems to be rare, if not impossible.

Atopic dermatitis is a common chronic, relapsing skin disorder, and many patients with atopic dermatitis use complementary and alternative medicine instead of consulting a certified dermatologist. Herein, we report the case of a 38-year-old woman with severe eczema herpeticum who had been treated with herbal medicine and acupuncture for her atopic dermatitis. Herbal medicine and acupuncture are the most frequent types of alternative medicine that Korean patients rely on. However, the effectiveness of these treatments in atopic dermatitis remains unclear as there is a great lack of scientific evidence supporting it. As atopic dermatitis can cause potentially fatal secondary infections such as eczema herpeticum, dermatologists should put great effort into communicating with and educating the patients and in guiding them to choose the most appropriate treatment plan for managing their atopic dermatitis.
Acupuncture ; Adult ; Coinfection ; Complementary Therapies ; Dermatitis, Atopic ; Eczema ; Female ; Herbal Medicine ; Humans ; Kaposi Varicelliform Eruption ; Skin

Objectives: . To train participants to localize sound using virtual reality (VR) technology, appropriate auditory stimuli that contain accurate spatial cues are essential. The generic head-related transfer function that grounds the programmed spatial audio in VR does not reflect individual variation in monaural spatial cues, which is critical for auditory spatial perception in patients with single-sided deafness (SSD). As binaural difference cues are unavailable, auditory spatial perception is a typical problem in the SSD population and warrants intervention. This study assessed the applicability of binaurally recorded auditory stimuli in VR-based training for sound localization in SSD patients. Methods: . Sixteen subjects with SSD and 38 normal-hearing (NH) controls underwent VR-based training for sound localization and were assessed 3 weeks after completing training. The VR program incorporated prerecorded auditory stimuli created individually in the SSD group and over an anthropometric model in the NH group. Results: . Sound localization performance revealed significant improvements in both groups after training, with retained benefits lasting for an additional 3 weeks. Subjective improvements in spatial hearing were confirmed in the SSD group. Conclusion . By examining individuals with SSD and NH, VR-based training for sound localization that used binaurally recorded stimuli, measured individually, was found to be effective and beneficial. Furthermore, VR-based training does not require sophisticated instruments or setups. These results suggest that this technique represents a new therapeutic treatment for impaired sound localization.

Apert syndrome is a rare genetic disorder characterized by malformations of the skull, face, hands, and feet. We report a case of severe hyperhidrosis in a 13-month-old female infant with Apert syndrome who was born with craniosynostosis, midface hypoplasia, and syndactyly of both hands. She had a history of excessive sweating since birth and this was confirmed using the iodine-starch test. Hyperhidrosis was first reported as a key cutaneous manifestation of Apert syndrome in 1993. However, the main focus in the field of dermatology is on antibiotic-refractory acne, which serves as another cutaneous hallmark of the disease. This is the first report in the Korean literature that describes hyperhidrosis in Apert syndrome. We highlight the presentation of hyperhidrosis as a key cutaneous manifestation in Apert syndrome.
Acne Vulgaris ; Acrocephalosyndactylia ; Craniosynostoses ; Dermatology ; Female ; Foot ; Hand ; Humans ; Hyperhidrosis ; Infant ; Parturition ; Skull ; Sweat ; Sweating ; Syndactyly