RT Book, Section
A1 Jefferson, Julie
A1 Rich, Phoebe
A2 Kelly, A. Paul
A2 Taylor, Susan C.
A2 Lim, Henry W.
A2 Serrano, Ana Maria Anido
SR Print(0)
ID 1161546680
T1 Nail Disorders
T2 Taylor and Kelly's Dermatology for Skin of Color, 2e
YR 2016
FD 2016
PB McGraw-Hill Education
PP New York, NY
SN 9780071805520
LK accessmedicine.mhmedical.com/content.aspx?aid=1161546680
RD 2024/04/19
AB KEY  POINTSLongitudinal  melanonychia  (LM)  is  common  in  darker  skin  types,  usually  as  a  result  of  melanocyte  activation.Atypical  LM  may  indicate  nail  apparatus  melanoma  (NAM).Evaluation  of  LM  for  NAM  includes  a  detailed  history  and  physical  examination,  examination  of  all  20  nails,  use  of  dermoscopy,  and  often  a  nail  matrix  biopsy.NAM  has  a  worse  prognosis  than  its  cutaneous  counterpart  in  large  part  due  to  delayed  diagnosis.Lichen  planus  commonly  causes  LM  in  persons  of  color.Lichen  planus  may  cause  irreversible  scarring  nail  disease.  Prompt  treatment  is  imperative.Lichen  planus  and  psoriasis  may  both  exist  as  a  primary  nail  disease  without  cutaneous  disease.Psoriasis  of  the  nail  unit  is  difficult  to  treat  primarily  because  of  poor  medication  bioavailability.Onychomycosis  is  the  most  common  nail  disorder.