Purpura

The will purpura is a lesion Hémorragique on the level of the Peau or Muqueuses, characterized by an aspect crimson not being erased with the Vitropression. The distribution of the purpuric spots can be Pétéchial E, ecchymotic, or in the form of Vibice.

Mechanism

Extravasation of red Globules out of the capillary, accumulating in the Derm.

Etiologies

Thrombopénique

The rate of plate S is lower than 50.000/mm ³
  • related to a peripheral Thrombopénie
  • related to a central thrombopénie

Thrombopathy

The rate of plates is normal, but dysfunction of the plates characterized by the lengthening of the Temps of bleeding.

Vascular

The rate of plate is normal like their operation. Only the capillary vessels are deteriorated, and allow the passage of the red globules.
  • chronic Purpura rhumatoïde
  • inflammatory Purpura idiopathic of the cryoglobulinemic adult
  • Purpura hyperglobulinemic of Waldenström
  • Purpura
  • constitutional capillary Brittleness
  • Disease of Ehlers-Danlos
  • knotty Periarteritis

Infections

  • Purpura fulminans

Mechanics

  • the insufficiency Veineus E of the legs: ocher Dermite
  • Seborrheic eczema-like will purpura
  • Effort of Vomissement

Carencielle

Others will purpura rare

  • annular and telangiectasic Purpura of Majocchi

See too

References

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