Blaschkoid lichen planus in an adult Kashmiri male: a rare presentation

Abstract

Lichen planus (LP) is common acquired dermatoses with several morphological forms. Linear lichen planus is frequently seen but cases of zonal/ zosteriform/ dermatomal/ blaschkoid LP are rare. We report a case of blaschkoid LP along with scalp LP in a 42 year old adult Kashmiri male. We report the case to add one more case to the list of this rare form of LP, with the peculiarity in our case of late onset of presentation and coexisting scalp LP, and review the literature to address to the confusion about the various related terms.

Bilateral linear lichen planus along the lines of Blaschko: Report of a rare case and brief review

“…Linear LP has been described in less than 1% of all LP patients [3]. Almost all of the reported cases of linear lichen planus along the lines of Blaschko presented unilaterally [3][4][5][8][9][10]. We herein report a rare case of bilateral linear Blaschkoid lichen planus.…”

“…Linear lichen planus along the lines of Blaschko is one of the rare morphological presentations of LP [5]. The lines of Blaschko were described in 1901 by the German dermatologist, Alfred Blaschko as the linear developmental patterns of epidermal and sebaceous nevi in more than 150 patients [6].…”

“…To solve this controversy, Blaschko lines should be clearly distinguished from other linear patterns such as lines of innervation of spinal nerves (dermatomes), Langer's lines, etc. [5,9]. Zosteriform (dermatomal) patterns consistently correspond to the areas that are innervated by the spinal nerves but Blaschko lines follow some distinct developmental patterns and are V-shape over the upper spine, S-shape on the abdomen, inverted U-shape from the breast area onto the upper arm and perpendicular over the front and back of the lower extremities [10].…”

“…In addition, linear LP may present with development of lesions along the lines of Blaschko [3,4]. Blaschko's lines do not correspond to the nervous, vascular or lymphatic structures and represent a form of mosaicism that develops during the embryonic period [5]. Linear LP has been described in less than 1% of all LP patients [3].…”

Dermatology Eponyms – sign –Lexicon (K)

“…The appearance of isomorphic lesions at the site of an injury in lichen planus, warts, molluscum contagiosum (Fig. 13), psoriasis, or lichen nitidus along a site of injury [23][24][25][26][27].…”