RT Book, Section
A1 Hardin, J. Matthew
A2 Knoop, Kevin J.
A2 Stack, Lawrence B.
A2 Storrow, Alan B.
A2 Thurman, R. Jason
SR Print(0)
ID 1181044060
T1 Id Reaction (Disseminated Eczema)
T2 The Atlas of Emergency Medicine, 5e
YR 2021
FD 2021
PB McGraw-Hill
PP New York, NY
SN 9781260134940
LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1181044060
RD 2024/04/24
AB Id  reactions  are  seen  in  response  to  a  variety  of  disorders,  including  fungal  infections  (tinea  capitis  and  tinea  pedis),  scabies  infestation,  pediculosis  capitus,  molluscum  contagiosum,  bacterial  and  mycobacterial  infections,  and  arthropod  bites.  The  rash  appears  days  to  weeks  after  the  instigating  rash  and  consists  of  erythematous  papules  (sometimes  crusted  at  the  apices)  as  well  as  eczematous  patches  and  plaques.  The  rash  can  be  local  to  the  instigating  lesions/rash,  distant,  or  generalized.  The  id  reaction  usually  presents  on  the  extremities,  commonly  on  the  sides  of  fingers,  but  may  occur  on  the  face  and  trunk.  Pruritus  is  intense.  The  id  reaction  will  not  demonstrate  infectious  organisms  and  may  not  respond  to  topical  steroids.