Lichen Planus
An inflammatory, pruritic disease of the skin and mucous membranes, which can be either generalized or localized. It is characterized by distinctive purplish, flat-topped papules having a predilection for the trunk and flexor surfaces. The lesions may be discrete or coalesce to form plaques. Histologically, there is a saw-tooth pattern of epidermal hyperplasia and vacuolar alteration of the basal layer of the epidermis along with an intense upper dermal inflammatory infiltrate composed predominantly of T-cells. Etiology is unknown.
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Subheadings:
Tree Number(s): C17.800.859.475.560
MeSH Unique ID: D008010
Entry Terms:
- Lichen Ruber Planus
- Lichen Rubra Planus
- Cutaneous Lichen Planus
- Lichen Planus, Cutaneous
- Mucosal Lichen Planus
- Lichen Planus, Mucosal
- Lichen Planopilaris
- Planopilaris, Lichen