This video tells us about lichen planus which is a chronic dermatosis of skin pathological condition. The video covers pathogenesis, causes, clinical features , risk factors, classification, treatment and clinical considerations related to lichen planus. TIMELINE: 0:14 Introduction 0:30 Etiopathogenesis 0:48 Causes 1:02 Clinical features 1:48 Risk factors 1:59 Predominance 2:05 Classification 2:35 Histology 2:50 oral manifestation Lichen planus 3:20 Treatments 3:45 Summary 4:41 End