lesions are violet coloured, polygonal, flat-topped papules that may coalesce into rough scaly patches it may discrete or in clusters form, sites of involvement are the flexor surfaces of wrists, forearms, ankles, legs, abdomen, and sacrum A 71 year old female patient of chronic lichen planus was registered with widespread eruption, severe itching with flat topped surface in cluster and discrete form over the lateral and flexor part of both legs since 15 years. The study was carried out in the OPD of Regional Research Institute of Unani Medicine, Mumbai. The duration of treatment was three months. The Unani medicine, Qurs-e- [Tab] Mussaffi was given orally and Raughan-e [Oil] kamela was used as local application over the lesion A significant relief occured in all features, like itching was almost subsided, surface of lesion and plaques decreased, large compact lesion and wounds gradually minimized, diminish flaking appearances of skin and new eruption almost negative at end of study and other manifestations were also almost subsided