Abstract

BALBONI, C et al. A case of unilateral blasch koidlichenplanus pigmentosus. Rev. argent. dermatol. [online]. 2021, vol.102, n.1, pp.66-75. ISSN 1851-300X.

Lichen planus is a chronic inflammatoryimmune-mediateddisease that affects skin, mucous membranes, nails and hair. It affects most commonly adult patients. There is an extended classification of the lichen planus variants.The classic type is characterized by pruriticpolygonal, flat-topped, violaceous papules and plaques, reticulated, with fine white scale Wickham’sstriae. It usually affects wrists and forearms, trunk, anterior aspect of thelegs and oral mucous. The unilateral variant is rare and more common in pediatric patients.When this variant is present, the clinical features are similar to the classic one. The unilateral lesions can be seenwith a methameric distribution (zosteriformdermatosis) or along the Blaschko lines (Blaschkoiddermatosis).

A 41-year-old female presented a history of pruritic lesions in trunk and left limb that had appeared 4 months earlier.

Keywords : lichen,planus; unilateral; blashkoid.

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