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Lichen Planus

definition

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.

synonyms

Lichen Planus, Lichen Ruber Planus

UMLS

Lichen Planus, Lichen planus NOS, Lichen Ruber Planus, Lichen Rubra Planus, Lichen, planus, Lichen, ruber, planus, LP - Lichen planus, Ruber planus

images

76 images found for this diagnose
localisation: lower arms, diagnosis: Lichen Planus localisation: palms, diagnosis: Lichen Planus localisation: sulcus coronarius, glans penis, diagnosis: Lichen Planus diagnosis: Lichen Planus localisation: subungual (fingernail), nail plate of the finger, diagnosis: Lichen Planus localisation: fingernail, diagnosis: Lichen Planus diagnosis: Lichen Planus localisation: wrists, diagnosis: Lichen Planus localisation: ankle joint, back of the feet, diagnosis: Lichen Planus diagnosis: Lichen Planus localisation: wrists, diagnosis: Lichen Planus localisation: wrists, back of the hands, fingernail, diagnosis: Lichen Planus localisation: trunk, diagnosis: Tattooing, Intentional localisation: fingernail, diagnosis: Lichen Planus localisation: sole, Interdigital region of the toes, diagnosis: Lichen Planus localisation: lower arms, diagnosis: Lichen Planus localisation: wrists, diagnosis: Lichen Planus localisation: inguinal region, diagnosis: Lichen Planus localisation: inguinal region, diagnosis: Lichen Planus localisation: palms, diagnosis: Lichen Planus localisation: back of the hands, diagnosis: Lichen Planus localisation: palms, diagnosis: Lichen Planus localisation: back of the hands, diagnosis: Lichen Planus localisation: back of the hands, diagnosis: Lichen Planus localisation: arms, diagnosis: Lichen Planus localisation: arms, diagnosis: Lichen Planus diagnosis: Lichen Planus localisation: lower arms, diagnosis: Lichen Planus localisation: anogenital region, diagnosis: Lichen Planus diagnosis: Lichen Planus localisation: upper leg, diagnosis: Lichen Planus localisation: upper leg, diagnosis: Lichen Planus localisation: upper leg, diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus localisation: wrists, diagnosis: Lichen Planus localisation: lower arms, wrists, diagnosis: Lichen Planus localisation: lower arms, wrists, diagnosis: Lichen Planus localisation: tibial, diagnosis: Lichen Planus localisation: trunk, diagnosis: Lichen Planus localisation: trunk, lower arms, diagnosis: Lichen Planus localisation: lower arms, diagnosis: Lichen Planus localisation: tongue, diagnosis: Lichen Planus localisation: tongue, diagnosis: Lichen Planus localisation: buccal, diagnosis: Lichen Planus localisation: mucous membrane of the mouth, diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus diagnosis: Lichen Planus localisation: back of the hands, diagnosis: Lichen Planus localisation: lower arms, back of the hands, diagnosis: Lichen Planus localisation: lower arms, diagnosis: Lichen Planus localisation: lower arms, diagnosis: Lichen Planus localisation: elbow, diagnosis: Lichen Planus localisation: back of the feet, diagnosis: Lichen Planus localisation: ankle joint, diagnosis: Lichen Planus localisation: hands, diagnosis: Acrokeratosis Verruciformis Hopf localisation: back of the hands, diagnosis: Lichen Planus localisation: back of the hands, lower arms, diagnosis: Lichen Planus localisation: hands, diagnosis: Lichen Planus localisation: mucous membrane of the mouth, diagnosis: Lichen Planus localisation: lower leg, diagnosis: Lichen Planus localisation: flank, diagnosis: Lichen Planus Exanthematicus localisation: gingiva, diagnosis: Lichen Planus of the Mucosa, Erosive localisation: fingernail, diagnosis: Lichen Planus localisation: fingernail, diagnosis: Lichen Planus localisation: fingernail, diagnosis: Lichen Planus localisation: fingernail, diagnosis: Lichen Planus localisation: peri-anal  region, diagnosis: Lichen Planus of the Mucosa, Erosive