E-Note for Adult Medicine
Stat | Lytes | Drugs |  ID  | AIDS | Heart | Lungs | Kidneys |  GI  | Rheum | Heme-Onc | Endo | Neuro | Derm | Toxic | Misc. | Resources | Home |


14 Dermatology
14-Dermatology

fever-rash
alopecia-areata
pruritus  
purpura

Back to top

Home Page

Purpura                                                                                                                                          

Primary Cutaneous Non-palpable Purpura:

  • Trauma, solar purpura, steroid purpura capillaritis, livedoid vasculitis (combination of a vasculopathy with intravascular thrombosis found in assoc. with painful ucer in leg)

Systemic Non-palpable Purpura:

  1. Thrombocytopenia, abnormal platelets, or clotting factor disorders.
  2. Vascular frgility: amyloidosis, Ehlers-Danlos synd, survy
  3. Thrombi: DIC, monoclonal cryoglobulinemia, TTP, warfarin reaction.
  4. Emboli: cholesterol, fat.
  5. Possible immune complex: Waldenstrom's hypergammaglobulinemic purpura, autoerythrocyte sensitization - Gardner-Diamond synd.

Systemic Palpable Purpura:

  1. Vasculitis:
    Leukocytoclastic/allergic vasculitis, Henoch-Schonlein purpura, polyarteritis nodosa.
  2. Emboli: acute meningococcemia, disseminated gonococcal infection, Rocky mountain spotted fever, ecthyma gangrenosum (Pseudomonas, Klebsiella, E.Coli, Serratia)

REF: Harrison Textbook