RT Book, Section
A1 Yazdany, Jinoos
A1 Manno, Rebecca L.
A2 Papadakis, Maxine A.
A2 McPhee, Stephen J.
A2 Rabow, Michael W.
A2 McQuaid, Kenneth R.
SR Print(0)
ID 1184193431
T1 Livedo Reticularis & Livedo Racemosa
T2 Current Medical Diagnosis & Treatment 2022
YR 2022
FD 2022
PB McGraw-Hill Education
PP New York, NY
SN 9781264269389
LK accessmedicine.mhmedical.com/content.aspx?aid=1184193431
RD 2024/04/24
AB Livedo  reticularis  produces  a  mottled,  purplish  discoloration  of  the  skin  with  reticulated  cyanotic  areas  surrounding  paler  central  cores  (see  eFigure  20–27).  This  distinctive  “fishnet”  pattern  is  caused  by  spasm  or  obstruction  of  perpendicular  arterioles,  combined  with  pooling  of  blood  in  surrounding  venous  plexuses.  Idiopathic  livedo  reticularis  is  a  benign  condition  that  worsens  with  cold  exposure,  improves  with  warming,  and  primarily  affects  the  extremities.  Apart  from  cosmetic  concerns,  it  is  usually  asymptomatic.  The  presence  of  systemic  symptoms  or  the  development  of  cutaneous  ulcerations  points  to  the  presence  of  an  underlying  disease.