RT Book, Section
A1 Lawley, Leslie P.
A1 McCall, Calvin O.
A1 Lawley, Thomas J.
A2 Jameson, J. Larry
A2 Fauci, Anthony S.
A2 Kasper, Dennis L.
A2 Hauser, Stephen L.
A2 Longo, Dan L.
A2 Loscalzo, Joseph
SR Print(0)
ID 1160011165
T1 Eczema, Psoriasis, Cutaneous Infections, Acne, and Other Common Skin Disorders
T2 Harrison's Principles of Internal Medicine, 20e
YR 2018
FD 2018
PB McGraw-Hill Education
PP New York, NY
SN 9781259644016
LK accessmedicine.mhmedical.com/content.aspx?aid=1160011165
RD 2024/04/19
AB Eczema  is  a  type  of  dermatitis,  and  these  terms  are  often  used  synonymously  (e.g.,  atopic  eczema  or  atopic  dermatitis  [AD]).  Eczema  is  a  reaction  pattern  that  presents  with  variable  clinical  findings  and  the  common  histologic  finding  of  spongiosis  (intercellular  edema  of  the  epidermis).  Eczema  is  the  final  common  expression  for  a  number  of  disorders,  including  those  discussed  in  the  following  sections.  Primary  lesions  may  include  erythematous  macules,  papules,  and  vesicles,  which  can  coalesce  to  form  patches  and  plaques.  In  severe  eczema,  secondary  lesions  from  infection  or  excoriation,  marked  by  weeping  and  crusting,  may  predominate.  In  chronic  eczematous  conditions,  lichenification  (cutaneous  hypertrophy  and  accentuation  of  normal  skin  markings)  may  alter  the  characteristic  appearance  of  eczema.