Purpura

Source: Wikipedia, the free encyclopedia.
Purpura
Petechiae and purpura on the lower limb due to medication-induced vasculitis
SpecialtyDermatology, hematology

Purpura (

ecchymoses greater than 1 cm.[4]

Purpura is common with

Gram-negative diplococcus organism, releases endotoxin when it lyses. Endotoxin activates the Hageman factor (clotting factor XII), which causes disseminated intravascular coagulation
(DIC). The DIC is what appears as a rash on the affected individual.

Classification

Purpura are a common and nonspecific medical sign; however, the underlying mechanism commonly involves one of:

Cases of

rickettsial
infection.

Etymology and pronunciation

The word purpura (/ˈpɜːrpɜːrə/) comes from Latin purpura, "purple", which came from ancient Greek πορφύρα. Purpura is a mass noun naming the condition or state, not the name of an individual spot (thus there is no *pupurum, *purpura or *purpura, *purpurae count declension).

See also

  • Bruise, which is a hematoma caused by trauma
  • Petechia, which is a small type of hematoma (<3 mm)
  • Ecchymosis
    , which is a large type of hematoma (>1 cm)
  • Purpura secondary to clotting disorders
  • Purpura hemorrhagica
    in horses
  • Pigmented purpuric dermatosis
  • Schamberg disease (progressive pigmentary purpura)

References

  1. ^ "PURPURA English Definition and Meaning | Lexico.com". Archived from the original on October 17, 2019.
  2. ^ "UCSF Purpura Module" (PDF). Archived from the original (PDF) on 2013-10-02.
  3. OCLC 878098857.{{cite book}}: CS1 maint: location missing publisher (link
    )
  4. OCLC 960844656.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link
    )
  5. .
  6. .
  7. .

External links