REBEL Core Cast – Basics of EM – Rash

Take Home Points

  • Examine all parts of the body, even inside the mouth – this can be the difference between benign and life threatening rashes
  • Truly emergent causes: meningococcemia, TTP, DIC, TSS, SJS, TEN, and necrotizing fasciitis
  • Toxic appearing patients with petechia/purpura = sepsis until proven otherwise
  • Look for medication reactions: Sulfa, Penicillins, NSAID’s, ABX, Chemo, Anti-epileptic agents
  • It’s ok not to know the cause – know the life threatening rashes and rule them out – refer to dermatology out patient
  • TTP – get smear, heme/onc consult, plasmapheresis, and AVOID giving platelets – they will just get chewed up – fix the underlying issue

REBEL Core Cast – Basics of EM – Rash

Click here for Direct Download of the Podcast


Eric Steinberg, DO
Program Director – St. Joseph’s Emergency Medicine Residency
Director, Imaging Curriculum – Foundations of Emergency Medicine
Editorial Board – MDCalc
ALL NYC EM Faculty

Post Peer Reviewed By: Anand Swaminathan, MD (Twitter: @EMSwami)

Cite this article as: Ellsworth Wright, "REBEL Core Cast – Basics of EM – Rash", REBEL EM blog, June 1, 2022. Available at:

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