Purpura

Revision as of 22:47, 9 September 2020 by Rossdonaldson1 (talk | contribs)

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.