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Cureus 2022 Jan 13;14(1):e21194. Epub 2022 Jan 13.

Department of Dermatology, LN Medical College, Bhopal, IND.

Introduction Skin disorders are a major health problem in the pediatric age group and are associated with significant morbidity. Papulosquamous disorders, forming a major part of the skin diseases in children, present in a variety of clinical pattern. This study is conducted in order to study the hospital-based prevalence of papulosquamous disorders in the pediatric age group (2-14 years) and to determine the morphology and clinical patterns with respect to their age and sex distribution. Read More

Indian J Dermatol 2021 Jul-Aug;66(4):413-414

Department of Dermatology, Hangzhou Third Hospital, Zhejiang, China. E-mail:

Ann Dermatol Venereol 2021 Sep 16. Epub 2021 Sep 16.

Department of Dermatology, Saint-Louis Hospital, University of Paris, AP-HP, 1, avenue Claude-Vellefaux, 75475 Paris cedex 10, France.

Introduction And Methods: Different clinical and histological variants of lichen planus (LP) exist, such as lichen planopilaris, pigmentosus, linear, or atrophic LP. Recently, some cases came to our attention of hyperpigmented and atrophic linear lesions of the face with lichenoid histology, suggesting a combination of these different variants. We carried out a single-center, retrospective descriptive study of 6 similar cases selected from our database and compared them with a literature review. Read More

Acta Derm Venereol 2021 Sep 15;101(9):adv00548. Epub 2021 Sep 15.

Alfred Health, Melbourne, Australia.

Nail dermoscopy (onychoscopy) is a valuable diagnostic tool for evaluating diseases in the nail apparatus. It is non-invasive, allowing clinicians to prioritize particular nails for biopsy. Thus, it can improve diagnostic accuracy and expedite treatment. Read More

JAAD Case Rep 2021 Oct 18;16:16-18. Epub 2021 Aug 18.

Department of Dermatology, Duke University Medical Center, Durham, North Carolina.

Pediatr Dermatol 2021 Sep 18;38(5):1340-1341. Epub 2021 Aug 18.

Department of Dermatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.

A 7-year-old healthy girl presented with an 11-month history of an asymptomatic red, dome-shaped papule on her right medial elbow and 6-month history of linearly distributed, few millimeter, flesh-colored papules extending from and including the red papule. Histopathology demonstrated features of both a Spitz nevus and lichen striatus. The Spitz nevus was removed with a punch biopsy and the lichen striatus subsequently resolved. Read More

Cureus 2021 Aug 3;13(8):e16846. Epub 2021 Aug 3.

Dermatology, King Khalid University Hospital, Riyadh, SAU.

There have been many reports of congenital and acquired dermatoses that trail Blaschko lines. Lichen striatus is representative of an acquired cutaneous linear inflammatory dermatosis running along the lines of Blaschko, characterized histopathologically by the predominance of lichenoid infiltration. Adult blaschkitis, however, is considered under the same disease spectrum as lichen striatus and is characterized by a spongiotic reaction pattern. Read More

Dermatopathology (Basel) 2021 May 21;8(2):135-146. Epub 2021 May 21.

Department of Dermatology, Boston University School of Medicine, Boston, MA 02118-2415, USA.

The interface dermatitides encompass a vast array of cutaneous entities which, at times, may present with particular clinical variants with adnexal predilection. Similarly, hair follicle and eccrine gland involvement of some of these entities has been observed on histopathology. This review aims to describe the various adnexotropic presentations of the interface dermatitides. Read More

Cureus 2020 Dec 17;12(12):e12124. Epub 2020 Dec 17.

Family Medicine, Tower Health Medical Group, Reading, USA.

Lichen striatus is a rare dermatological condition seen in children. The exact etiology of this self-limiting eruption is unknown. A combination of genetic predisposition with an infectious trigger is the most accepted hypothesis for the etiology. Read More

Front Immunol 2020 27;11:568447. Epub 2020 Oct 27.

Department of Dermatology, Gent University Hospital, Gent, Belgium.

The autoimmune basis of segmental vitiligo (SV) has only recently been recognized. Systemic autoimmune diseases are less frequently associated compared to non-segmental vitiligo (NSV), but localized skin disorders - in particular linear morphea - have been repeatedly observed in patients with SV. The inflammatory response is documented on a clinical level with cases displaying erythematous borders or a hypochromic stage, on a histopathological level with predominantly CD8 lymphocytes migrating toward the basal layer and by flow cytometry demonstrating the antimelanocyte specificity of these cytotoxic T cells. Read More

Cureus 2020 Oct 3;12(10):e10785. Epub 2020 Oct 3.

Dermatology, San Diego Family Dermatology, National City, USA.

Cutaneous conditions can follow Blaschko's lines on the skin, which are thought to reflect patterns of cell migration and clonal expansion during embryonic development of the epidermis. These diseases are hypothesized to be caused by genetic mosaicism resulting from processes such as lyonization or somatic postzygotic mutation. Lichen striatus and blaschkitis are two such acquired inflammatory skin disorders that are distinguished in the literature by age of onset, location, and histopathological features. Read More

Dermatol Online J 2020 May 15;26(5). Epub 2020 May 15.

Fundacion Universitaria Sanitas. Bogota.

There are a number of conditions that follow the lines of Blaschko. Linear discoid lupus erythematosus is a rare variant of chronic lupus erythematosus with less than 20 cases reported in children. It can be misdiagnosed as lichen striatus or linear morphea. Read More

Int J Dermatol 2020 Sep 3;59(9):e337-e339. Epub 2020 Jun 3.

Department of Dermatology, Eulji University Hospital, Eulji University School of Medicine, Daejeon, Korea.

Ital J Dermatol Venerol 2021 02 10;156(1):107-108. Epub 2020 Mar 10.

Unit of Dermatology, University of Campania, Naples, Italy.

Case Rep Pediatr 2020 27;2020:1494760. Epub 2020 Jan 27.

Toronto Dermatology Centre, Toronto, Ontario M3H 5Y8, Canada.

We describe a 6-year-old boy with an asymptomatic linear eruption on the left index finger with mild erythema of the proximal nail fold, nail dystrophy, and subungual hyperkeratosis of the nail. A diagnosis of nail lichen striatus was made. The child was successfully treated with a topical corticosteroid. Read More

Arch Dis Child Educ Pract Ed 2021 08 30;106(4):237-238. Epub 2019 Oct 30.

Paediatrics, Southern Health and Social Care Trust, Portadown, UK

A 5-month-old female patient presented to the general practitioner with a 2-week history of an unexplained linear lesion on her left lower limb extending from the medial part of her thigh to the medial aspect of her leg and onto the sole of her foot (figures 1 and 2). It was hyperpigmented, papular and non-blanching. There was no history of trauma, itching, pain, infective symptoms or social concerns. Read More

Indian J Dermatol Venereol Leprol 2019 Nov-Dec;85(6):632-634

Department of Dermatology, IMS and SUM Hospital, Bhubaneswar, Odisha, India.

J Dermatol 2019 Dec 28;46(12):e478-e480. Epub 2019 Aug 28.

Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.

Eur J Dermatol 2019 Jun;29(3):281-286

Department of Dermatology.

Background: Since the first description of adult blaschkitis (AB), the existence of this entity has been a matter of great debate.

Objectives: To compare clinicopathological features of lichen striatus (LS) and AB cases.

Materials And Methods: We retrospectively reviewed the clinicopathological features of patients who clinically showed linear inflammatory dermatosis along Blaschko's lines based on a skin biopsy registry. Read More

J Am Acad Dermatol 2019 Nov 1;81(5):1157-1164. Epub 2019 Aug 1.

Department of Dermatology, University of Florida College of Medicine, Gainesville, Florida. Electronic address:

Background: Lichenoid granulomatous dermatitis (LGD) is an uncommon reaction pattern for which clinical correlates can be difficult to establish. LGD combines vacuolar degeneration with variable types of granulomas.

Objective: To determine clinical correlates of LGD. Read More

Pediatr Dermatol 2019 Nov 30;36(6):859-863. Epub 2019 Jul 30.

Division of Dermatology, Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy.

Background/objectives: Lichen striatus is a unilateral inflammatory dermatosis that rarely affects the nail unit. When the inflammation involves the nail unit, classic lichenoid nail changes are easily detectable, more often limited to only one portion of the nail. Usually the nail dystrophy coexists with periungual skin papules following Blaschko's lines, but it could also be an isolated feature. Read More

Pediatr Dermatol 2019 Mar 11;36(2):189-192. Epub 2019 Feb 11.

Department of Pathology, Dr. Behcet Uz Children's Research and Training Hospital, Izmir, Turkey.

Objective: Lichen nitidus (LN) is an uncommon inflammatory skin eruption. The present study aims to describe a case series of children with LN seen at a tertiary-care health center.

Methods: Retrospective study of 17 children with biopsy-proven LN between January 2007 and March 2017. Read More

Indian J Dermatol 2019 Jan-Feb;64(1):62-64

Department of Pathology, Maulana Azad Medical College, New Delhi, India.

Lichen nitidus is a common dermatosis described classically as shiny, skin-colored, nonfollicular, flat-topped papules. A number of variants have been described in literature including localized, generalized, actinic, vesicular, perforating, hemorrhagic, palmar/plantar, purpuric, and linear forms. Here, we report an unusual case of linear lichen nitidus in an 11-year-old boy mimicking lichen striatus along the left thumb with isolated nail involvement of the affected digit. Read More

Dermatol Ther 2019 03 18;32(2):e12831. Epub 2019 Feb 18.

Department of Dermatology & STD, NDMC Medical College & Hindu Rao Hospital, New Delhi, India.

Two patients, one with nail lichen striatus and second with idiopathic trachyonychia were treated with intramatriceal injections of platelet-rich plasma. A total of 0.1 ml of the plasma solution was injected into the matrix of the involved nails at three weekly intervals. Read More

An Pediatr (Engl Ed) 2019 Dec 28;91(6):418. Epub 2018 Nov 28.

Servicio de Dermatología Médico-Quirúrgica y Venereología, Hospital Clínico San Cecilio, Granada, España.

Dermatol Ther 2018 11 5;31(6):e12713. Epub 2018 Nov 5.

Department of Dermatology, College of Medicine, University of Hanyang, Seoul, Korea.

Am J Dermatopathol 2019 May;41(5):e50-e53

Research Unit Dermatopathology, Department of Dermatology, Medical University of Graz, Graz, Austria.

Perieccrine inflammation may be observed in several different dermatoses, but true permeation of the secretory coil by lymphocytes (lymphocytic syringotropism) is a rather uncommon finding, usually observed in mycosis fungoides (MF-syringotropic MF). Rare cases of syringotropic lichen striatus and lymphocytic autoimmune hidradenitis showing a similar pattern have been described as well. We describe an exceptional case of lichen planus (LP) characterized by marked lymphocytic syringotropism with focal hyperplasia of the eccrine epithelium. Read More

Dermatol Online J 2018 Jul 15;24(7). Epub 2018 Jul 15.

University of New England College of Osteopathic Medicine, Biddeford, Maine.

Lichen striatus is a rare inflammatory dermatosis that follows the lines of Blaschko. This paper discusses an unusual presentation of lichen striatus following hepatitis B vaccination and reviews the literature of vaccine-induced lichen striatus. Read More

Indian Dermatol Online J 2018 Sep-Oct;9(5):360-361

Department of Dermatology and STD, University College of Medical Sciences and GTB hospital, New Delhi, India.

Postepy Dermatol Alergol 2018 Aug 21;35(4):434-435. Epub 2018 Aug 21.

Department of Dermatology, Poznan University of Medical Sciences, Poznan, Poland.