Exam

Diascopy

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Diascopy

  • Indications
  1. Distinguish Purpura from erythema (Diascopy)
  • Technique
  1. Place glass slide over lesion border
  2. Apply direct pressure on lesion
  • Interpretation
  1. Lesion remains red suggests Purpura
  2. Lesion blanches (loses red color) suggests erythema