McKay, Marilynne (1990). Diascopy is a refinement in which a piece of clear glass or plastic is pressed against the skin while the observer looks directly at the lesion under pressure. The purpose of this procedure is to empty blood from the superficial vessels to determine if skin redness is due to blood within vessels (erythema) or extravasated into the skin (petechiae, purpura). The former will blanch with pressure, the latter will not.. «Office Techniques for Dermatologic Diagnosis». Boston: Butterworths. Clinical Methods: The History, Physical, and Laboratory Examinations. PMID21250056. Consultado em 28 de dezembro de 2016
visualdx.com
«7. Diascopy» [7. Diascopia]. LearnDerm. VisualDx. Consultado em 28 de dezembro de 2016. Differentiate between a blanching erythema and non-blanching purpura by pressing with a glass slide, a procedure called diascopy.
