Borsari's sign

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Borsari's sign or Borsari's line is a dermatological sign that consists of pressure by a sharp object (such as a fingernail) producing a white line on the skin that quickly turns red. It is present in scarlet fever.[1]


  1. ^ Patel LM, Lambert PJ, Gagna CE, Maghari A, Lambert WC (2011). "Cutaneous signs of systemic disease". Clin. Dermatol. 29 (5): 511–22. doi:10.1016/j.clindermatol.2011.01.019. PMID 21855727.