Clinical and dermoscopic analysis of generalised linear and whorled hypermelanosis in a child: A case report

Linear and whorled nevoid hypermelanosis (LWNH) is a rare sporadic disorder of pigmentation characterised by swirls and streaks of macular pigmentation along the lines of Blaschko. It can be frequently associated with extracutaneous features. We report clinical and dermoscopic presentation of a case of generalised linear and whorled nevoid hypermelanosis in a 1-year-old child involving the trunk and extremities while sparing the face, palms, soles and mucosae without any extracutaneous features.

Clinico-pathological correlation of linear dermatoses along the lines of Blaschko: An observational study

Several epidemiological studies have described linear dermatoses; however, only few studies have correlated linear dermatoses along Blaschko’s lines with the histopathological findings. The aims of this study were to investigate the clinical patterns of various linear dermatological lesions along Blaschko’s lines and investigate the correlations between these dermatological lesions and their histopathological features. Patients who attended our dermatology out-patient department with linear dermatoses along the Blaschko’s lines were included in the study. Detailed history was obtained, clinical examination was performed, and a final provisional clinical diagnosis was noted. Subsequently, biopsy of the lesions was performed for histopathological examination. Of 62 patients who presented with linear lesions along the Blaschko’s lines, 45 patients underwent biopsy and histopathological examination. Of 45 patients who underwent biopsy, clinico-pathological correlation was observed in 100% of those diagnosed with lichen striatus and linear morphea, 89% of those diagnosed with hypomelanosis of Ito, 80% of those diagnosed with linear epidermal nevus, 75% of those diagnosed with lichen planus, and 67% of those diagnosed with nevus depigmentosus. The importance of correlation of linear lesions with their histopathological features in dermatology cannot be over emphasized. However, 100% correlation may be wishful thinking, and a correlation can help choose the appropriate line of management. Our results highlight this discrepancy and add to the knowledge on linear dermatosis.

Linear lupus panniculitis of scalp: a case report from north-east India

<p class="abstract">Lupus panniculitis of scalp is an uncommon manifestation of lupus erythematosus, which presents as non-scarring linear, arched, or annular alopecia along the lines of Blaschko. A 7 year old child presented with localised linear non-scarring alopecia on scalp. Examination revealed a single linear alopecic patch on the left parietal scalp. There were no associated systemic complaints. Skin biopsy showed atrophic lining epithelium, diffuse and nodular lymphocytic and plasma cells infiltrates in the superficial and deep dermis, lobular inflammatory infiltration of lymphocytes, histiocytes and plasma cells, with minimal involvement of septa in the subcutaneous tissue. Antinuclear Antibody (ANA) and anti-ds DNA tests were negative. Patient responded well with regrowth of terminal hair within 3 weeks to a combination treatment of hydroxychloroquine, topical and intralesional steroids, and topical calcineurin inhibitor. Linear lupus panniculitis of scalp should be considered in cases of patterned, non-scarring alopecia. Regular follow-up is also essential due to the possibility of recurrence and development of systemic lupus erythematosus.</p>

Lichen planus pigmentosus, linear nevoid pattern along the lines of blaschko with mucosal involvement

Pigmented lichen planus is a rare variant of lichen planus that is characterized by oval and round shape dark brown macules with indistinct border. Linear pigmented lichen planus is a clinical pattern of planus disease that presents unilaterally along one or more lines of blaschko. We report a 30–year-old female patient with Linear pigmented lichen planus along the lines of blaschko with mucosal involvement. Keywords: Pigmented lichen planus; Blaschko line; Mucosal involvement.

Isolated Linear Discoid Lupus Erythematosus of Scalp Following Lines of Blaschko

Discoid lupus erythematosus (DLE) is an inflammatory autoimmune disease leading to scarring and hair loss. Linear Discoid lupus erythematosus has been mentioned in the literature as a rare variant. This article describes isolated linear DLE of the scalp. We present a 26-year-old Saudi male who had unilateral linear DLE of the scalp with no involvement of other body sites and no systemic manifestations. This case is the first case of isolated linear DLE on the scalp. This presentation should be considered as a differential diagnosis of linear scarring alopecia as a distinct morphological pattern of DLE.

Adult-onset linear discoid lupus erythematosus on the forehead mimicking en coup de sabre: a case report

Background Linear cutaneous lupus erythematosus (LE) is an unusual form of LE-specific cutaneous condition, occurring in children and young adults. Due to its rarity, the diagnosis of linear cutaneous LE can be difficult and facial lesions can resemble linear morphea or en coup de sabre. Differential diagnosis of similar conditions along the lines of Blaschko must be differentiated from linear LE. Case presentation We report a case of linear discoid LE on the forehead of an adult female Thai patient mimicking en coup de sabre. The dermatoscopy, histopathology and direct immunofluorescence findings were consistent with chronic cutaneous LE. Conclusions As this patient demonstrated classic dermatoscopic features of LE, we emphasized that the diagnosis of linear cutaneous LE can be made by dermatoscopy. This is particularly beneficial for young self-conscious patients with facial lesions that are reluctant to perform skin biopsy.