Dermatology Book



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

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