Difference between revisions of "Purpura"
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Revision as of 03:52, 27 November 2019
- 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
- Toxic appearance
- Mucosal lesions
- Severe pain
- Very old or young age
- New medication
Both petechia and purpura do not blanch
- Purpura subdivided into:
- <2mm of hemorrhage: petechiae
- >2mm of hemorrhage: ecchymoses
- Abnormal platelet count and/or coagulation
- Hypersensitivity vasculitis
- Primary vasculitides
- Secondary vasculitides
- Febrile, toxic
- Afebrile, nontoxic
Splinter hemorrhage (endocarditis)
- Management directed by underlying condition
- Nguyen T and Freedman J. Dermatologic Emergencies: Diagnosing and Managing Life-Threatening Rashes. Emergency Medicine Practice. September 2002 volume 4 no 9.