RT Book, Section
A1 Mangold, Aaron R.
A1 Pittelkow, Mark R.
A2 Kang, Sewon
A2 Amagai, Masayuki
A2 Bruckner, Anna L.
A2 Enk, Alexander H.
A2 Margolis, David J.
A2 McMichael, Amy J.
A2 Orringer, Jeffrey S.
SR Print(0)
ID 1161328688
T1 Lichen Planus
T2 Fitzpatrick's Dermatology, 9e
YR 2019
FD 2019
PB McGraw-Hill Education
PP New York, NY
SN 9780071837798
LK dermatology.mhmedical.com/content.aspx?aid=1161328688
RD 2024/04/24
AB AT-A-GLANCELichen  planus  is  an  idiopathic  T  cell–mediated  process  without  a  clear  autoantigen.The  worldwide  prevalence  of  lichen  planus  is  approximately  1%.The  lesions  are  well-marginated,  flat-topped,  red-violet  polygonal  papules.The  distribution  is  symmetrical  and  grouped  lesions  affect  the  flexural  aspects  of  the  arms  and  legs.Variants  are  based  on  configuration,  morphology  of  lesion,  and  site  of  involvement.Histology  shows  basal  keratinocyte  damage  with  a  lymphocyte-rich  interface  reaction.