Difference between revisions of "Purpura"

(Purpuraal Rash)
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==Clinical Features==
 
==Clinical Features==
[[File:HSPVasc01.jpg| thumb|Palpable Purpura]]
 
[[File:PetechiaeSkin.png| thumb|Petechiae]]
 
 
''Both petechia and purpura do not blanch''
 
''Both petechia and purpura do not blanch''
 
*Purpura subdivided into:
 
*Purpura subdivided into:
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===[[Purpura]]l Rash===
 
===[[Purpura]]l Rash===
 
<gallery mode="packed">
 
<gallery mode="packed">
 +
File:HSPVasc01.jpg|Palpable purpura
 +
File:PetechiaeSkin.png|Petechiae
 
File:Rocky Mountain Spotted Fever Rash.jpg|[[Rocky mountain spotted fever]]
 
File:Rocky Mountain Spotted Fever Rash.jpg|[[Rocky mountain spotted fever]]
 
File:Henoch-schonlein-purpura.jpg|[[Henoch-Schonlein purpura]]
 
File:Henoch-schonlein-purpura.jpg|[[Henoch-Schonlein purpura]]
 +
File:Baby_purpura.png|Neonatal [[purpura fulminans]]
 +
File:PurpuraFulminans.png|[[Purpura fulminans]]
 
</gallery>
 
</gallery>
  

Revision as of 22:47, 9 September 2020

Background

  • Palpable petechiae and purpura are a result of either perivascular inflammation (vasculitis) or infection.
  • Non-palpable petechiae usually occur in low platelet states such as ITP and DIC

Rash Red Flags[1]

Clinical Features

Both petechia and purpura do not blanch

  • Purpura subdivided into:
    • <2mm of hemorrhage: petechiae
    • >2mm of hemorrhage: ecchymoses

Purpural Rash

Differential Diagnosis

Petechiae/Purpura (by cause)

Petechiae/Purpura (by findings)

Evaluation

Purpural Rash

Management

  • Management directed by underlying condition

Disposition

See Also

References

  1. Nguyen T and Freedman J. Dermatologic Emergencies: Diagnosing and Managing Life-Threatening Rashes. Emergency Medicine Practice. September 2002 volume 4 no 9.