<prompt> Which of the following isare not a subtype of lichen planus:Ulcerative lichen planusLichen nitidusHypertrophic lichen planusLichen scrofulosorum  <response>: Ans. a. Ulcerative lichen planus, d. Lichen scrofulosorumThe clinical presentation of lichen planus has several forms: actinic in sun-exposed areas, annular, atrophic, erosiveulcerative, follicular, hypertrophic, linear, pigmented, and vesicularbullous.Lichen scrofulosorum is a type of tuberculid which occurs due to mycobacterial hypersensitivity.Lichen nitidus is a rare skin condition that usually appears as tiny, skin-colored, glistening bumps on the surface of your skin. Lichen nitidus results from abnormal inflammatory activity in skin cells, but the cause of inflammation is unknown. 