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LICHEN PLANUS. BY DR.MAHESH MATHUR , MD,DVD,DCP(UK). LICHEN PLANUS. DIFINETION CHRINIC INFLAMMATORY DISEASE OF UNKNOW ETIOLOGY CHARECTRISED BY ------ SHINY VIOLACEOUS ITCHY FLAT TOPPED PAPULAR LESIONS MORPHOLOGICALLY & HISTOLOGICALLY CHARECTERISED BY --------
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LICHEN PLANUS BY DR.MAHESH MATHUR,MD,DVD,DCP(UK)
LICHEN PLANUS DIFINETION CHRINIC INFLAMMATORY DISEASE OF UNKNOW ETIOLOGY CHARECTRISED BY ------ SHINY VIOLACEOUS ITCHY FLAT TOPPED PAPULAR LESIONS MORPHOLOGICALLY & HISTOLOGICALLY CHARECTERISED BY -------- LIQUIFIED DEGENRATION OF BASAL CELL LAYER AND BAND LIKE LINEAR CELLULAR INFILTRATION IN DERMIS
INCIDENCE • WORLD WIDE – MUCH MORE IN ASIAN COUNTRIES • 1 TO 2 % OF ALL NEW CASES IN DERMATOLOGY CLINIC • SKIN LESION SUBSIDES IN 50 % OF CASES IN 9 MONTHS AND 100% BY 18 MONTHS • MUCOUS MEMBREANS INVOLVE IN 30 OT 70 % CASES • NAIL INVOLMENT IN 10% OF CASES
PATHOGENESIS • AUTOIMMUNE – INFILTRATION OF CD 4+ / CD 8+CELLS & INCREAS IN Langerhan’S CELLS NUMBER IN SKIN LESIONS • FAMILIAL- HLA B7 -
CLINICAL TYPES • HYPERTROPHICUS • FOLLICULAR • ACTINICUS • PIGMENTOSUS • ANULAR • LINEAR • GUTTATE • NAIL- 15% • MUCOSAL- 40 TO 60% ORAL PERIANAL ESOPHAGIAL GENITAL
TYPICAL LICHEN PLANUS • SHINY, • VIOLACEOUS • PAPULAR • LESIONS
HISTOPATHOLOGY • HYPERKERATOSIS • HYPERGRANULOSIS • ACANTHOSIS • LIQUFYING DEGENERATION OF BASAL CELL LAYER • EOSINOPHILIC CYTOID BODIES
IMMUNOFLOURACENCE • IgG & C3 • DEPOSITION AT DERMOEPIDERMAL JUNCTION
IMMUNOFLOURACENCE • CYTOID BODIES • IGM STAINING
DRUGS CASUUSING LICHENOID REACTION • ANTIMALARIALS • THIAZID DIURATICS • ISONIAZID • CHLORPROPAMID • B-BLOCKERS • KETOCONAZOLE • NSADS • ACE INHIBITORS • TETRACYCLINE • COLOURING AGENTS
TREATMENT & PROGNOSIS • STEROIDS-TOPICAL & SYSTAMIC • PUVA • CYCLOSPOIN • AZOTHIOPRIN