Purpura: Difference between revisions

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==Background==
==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}}
==Clinical Features==
[[File:HSPVasc01.jpg| thumb|Palpable Purpura]]
[[File:PetechiaeSkin.png| thumb|Petechiae]]
''Both petechia and purpura do not blanch''
*Purpura subdivided into:
*Purpura subdivided into:
**<2mm of hemorrhage: petechiae  
**<2mm of hemorrhage: petechiae  
**>2mm of hemorrhage: ecchymoses
**>2mm of hemorrhage: ecchymoses


==Clinical Features==
===[[Purpura]]l Rash===
[[File:HSPVasc01.jpg| thumb|Palpable Purpura]]
<gallery mode="packed">
File:Rocky Mountain Spotted Fever Rash.jpg|[[Rocky mountain spotted fever]]
File:Henoch-schonlein-purpura.jpg|[[Henoch-Schonlein purpura]]
</gallery>


==Differential Diagnosis==
==Differential Diagnosis==
{{Purpura DDX}}
{{Purpura DDX}}
{{Purpura DDX by findings}}
==Evaluation==
{{Purpura rash images}}
==Management==
*Management directed by underlying condition
==Disposition==


==See Also==
==See Also==
*[[Rashes]]
*[[Rashes]]
==References==
<references/>


[[Category:Dermatology]]
[[Category:Dermatology]]
[[Category:Symptoms]]

Revision as of 04:06, 27 November 2019

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

Palpable Purpura
Petechiae

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.