...Fatemeh Mohaghegh; Zohre Khodashenas; Mina Saber; Haniyeh Sohrabi Introduction: Lichen planus (LP) is a chronic inflammatory dermatosis that causes plaques and itchy papules on the skin, as well as erosion and ulcers in the mucous membranes. LP is characterized by a dense dermal T-cell infiltration...

... restrict the rate of biopsied cases to less than 15%. Case Presentations: This case series elucidates 20 patients referred to the tertiary dermatology clinic, including 14 COVID-19 infection-related eruptions such as lichen planus (LP), cutaneous vasculitis, pityriasis rosea (PR), discoid lupus...

...Laura Kern; Luisa Kleinheinrich; Robert Feldmann; Paul Sator; Alexander Stella; Friedrich Breier Lichen planus is a chronic, inflammatory, immune-mediated dermatosis affecting the patient’s skin, scalp, mucous membranes, and nails. Drug-induced lichen planus is described after the administration...

... with hypergranulosis and typical lichenoid tissue reaction. These findings suggested that the scalp lesions were lichen planus. Two-week administration of topical corticosteroid dramatically improved the rash. Immunotherapy with pembrolizumab, an anti-PD-1 antibody, can induce T-cell activation that results in various...

...Anne Guertler; Natalie Evenschor; Marlene Seegraeber; Lars Einar French; Véronique Weiler; Michael Flaig; Daniela Hartmann Lichen planus pigmentosus inversus (LPPI) is a rare subvariant of Lichen planus pigmentosus (LPP), presenting with sharply defined brown to gray macules, papules, and plaques...

...Woranit Onprasert; Kumutnart Chanprapaph Lichen planus pemphigoides (LPP) is a rare autoimmune bullous dermatosis. The clinical presentation of LPP may mimic bullous pemphigoid making the diagnosis difficult. A thorough clinical, histopathological, and immunological evaluation is essential...

...Aastha Gupta; Kabir Sardana; Ram Kishan Gautam Oral lichen planus is a relatively common autoimmune disease affecting the middle-aged population. Although no treatment is necessary for a benign asymptomatic case, in case of erosive lichen planus, topical corticosteroids form the mainstay...

...Ellie Choi; Kong Bing Tan; Nisha Suyien Chandran Oral lichen planus (LP) is a common manifestation in patients with LP; however, isolated lip LP is rare and may mimic other conditions such as lichenoid drug eruptions, actinic cheilitis, and early carcinoma in situ in the absence of typical skin...

...Jürg Hafner; Christoph Gubler; Karin Kaufmann; Stephan Nobbe; Alexander A. Navarini; Lars E. French A 74-year-old woman with extensive lichen planus mucosae (LPM) developed stenotic esophagitis that was refractory to intravenous glucocorticosteroids. Esophageal dilatations to 14 mm width were...

...I. Kolm; N. Eggmann; J. Kamarashev; K. Kerl; L.E. French; G.F.L. Hofbauer Background: Lichen planus is a common skin disorder of unknown etiology. Most cases are idiopathic, but substances such as gold, antimalarials, penicillamine, thiazide diuretics, β-blockers, arsenic and nonsteroidal anti...

...Ken Washio; Atsuko Nakamura; Shunpei Fukuda; Takashi Hashimoto; Tatsuya Horikawa Lichen planus pemphigoides (LPP) is a rare clinical variant of bullous pemphigoid (BP). A 35-year-old female patient presented to our hospital complaining of pruritic violaceous-colored plaques or papules...

...Vasanop Vachiramon; Poonkiat Suchonwanit; Kunlawat Thadanipon Lichen planus pigmentosus is a rare subtype of lichen planus. We report a first case of lichen planus pigmentosus with bilateral linear distribution associated with hepatitis C virus infection. The lesion was improved after sun avoidance...

...% of patients present with extragenital lesions, particularly of the trunk, neck, and upper limbs. The possible relationship between lichen sclerosus et atrophicus and both lichen planus (LP) and localized scleroderma (morphea) has not been clearly established, although in a number of cases, several...