Saxena, Vasu SBhai, Pandey Prashant2015-07-082015-07-082014-09Saxena Vasu S, Bhai Pandey Prashant. Lichen Planus in Four Clinical Forms. IJSS Case Reports & Reviews. 2014 Sep; 1(4): 5-7.http://imsear.searo.who.int/handle/123456789/159326Lichen planus is an autoimmune disorder which comes under lichenoid reactions. It is T-cell mediated cytotoxic reaction directed against antigen expressed by basal cell layer of the oral mucosa. Autoreactive T-lymphocytes may be of primary importance for the development of oral lichen planus. Lichen planus presentations in the oral cavity are in 6 forms: Reticular, papular, plaque, bullous, erythematous and ulcerative. We present a case report of 4 forms in a patient.enAuto immune reactionsLichen planusT-lymphocytesAgedAutoimmunity --immunologyHumansLichen Planus, Oral --classificationLichen Planus, Oral --diagnosisLichen Planus, Oral --drug therapyLichen Planus, Oral --epidemiologyLichen Planus, Oral --etiologyLichen Planus, Oral --immunologyMaleT-Lymphocytes --immunologyArticle