Quincke’s Sign
The alternating blanching and flushing of the skin may be the result of focal arteriolar dilatation, seen here in an area of reactive dermatitis due to insect bites on the patient’s knee. See the NEJM article:
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Quincke’s Sign
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Quincke’s sign/ pulse
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Quincke’s sign or pulse in Aortic Regurgitation
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Капиллярный (артериолярный) пульс - симптом Квинке (Quincke’s pulse)
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