Author(s)

Rong Lu, Lifeng Zhou

Corresponding Author

Lifeng Zhou

Abstract

A 29-year-old male patient was found to have gray-blue pigmented spots on the right forehead and right mandible six months ago without obvious cause, and mild itching was not diagnosed and treated. The rashes gradually increased thereafter. After dermatological examination, it was found that the dermatological examination gray-blue pigmented patches were seen on the right forehead and right mandible, distributed linearly along the Blaschko line, brown-black patches on the right buccal mucosa, and normal buccal mucosa on the left. The histopathology of the facial skin lesions showed that the epidermis was hyperkeratosis, the basal layer pigment increased, the basal cells focally liquefied and degenerated, and appeared serrated, dermal pigment incontinence, superficial dermal inflammatory cell infiltration, and obvious perivascular inflammatory cell infiltration. The diagnosis was linear pigmented lichen planus.

Keywords

Lichen Planus; Pigment Type; Linear; The Face Part