skin lesion blanching

Discussion in 'Medical Students - DO' started by applicant2002, May 6, 2004.

  1. applicant2002

    applicant2002 Senior Member
    10+ Year Member

    Joined:
    Jul 10, 2001
    Messages:
    379
    Likes Received:
    0
    question: what does it mean if a skin lesion blanches or doesn't
    a doc told me once, but i forgot and it's bugging me
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...
  2. scrupulous79

    scrupulous79 Member
    7+ Year Member

    Joined:
    Jul 29, 2003
    Messages:
    46
    Likes Received:
    0
    this is what i remember (but its not from a text book)...when you push on an erythematous lesion on someone's skin and it blanches, its called DIASCOPY (a dermatologist told us that, so i'm not sure if most people are familiar with the word). Lesions that are due to vasodilation (like an allergic reaction or hives or something like that) should blanch because its just erythema from the area being flushed.....if its actually blood under the skin (purpura, ecchymoses) then pushing on the reddened area of skin won't make it blanch because theres actually blood underneath

    hope this helps
     
    Stop hovering to collapse... Click to collapse... Hover to expand... Click to expand...

Share This Page