Lichen Planus- treatment, symptoms and cause of Lichen Planus

Lichen planus (LP) is a papulosquamous disorder in which the primary lesions are pruritic, polygonal, flat-topped, violaceous papules. Close examination of the surface of these papules often reveals a network of gray lines (Wickham's striae).

The skin lesions may occur anywhere but have a predilection for the wrists, shins, lower back, and genitalia. Involvement of the scalp may lead to hair loss. LP commonly involves mucous membranes, particularly the buccal mucosa, where it can present as a white netlike eruption. Its etiology is unknown, but cutaneous eruptions clinically resembling LP have been observed after administration of numerous drugs, including diuretics, gold, antimalarials, penicillamine, and phenothiazines, and in patients with skin lesions of chronic graft-versus-host disease.

Additionally, LP associated with abnormal liver function has been correlated with viral hepatitis, particularly hepatitis C infection. The course of LP is variable, but most patients have spontaneous remissions 6 months to 2 years after the onset of disease. Topical glucocorticoids are the mainstay of therapy.

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