Editor's note: This post was listed in both the #FOAMED Review from EM Curious AND in the LITFL Review 154 "Best of #FOAMed" section.
As an EM physician, it is difficult to have working knowledge of the hundreds of different types of rashes that exist. However, I argue that it is not the job of the EM physician to diagnose every rash that comes in the ED. That is the job of the dermatologist who has the luxury of time and biopsies. Rather, it is our duty, just like chest pain and syncope, to rule out the life-threatening causes of skin lesions, quickly identify a potentially lethal rash, and provide the appropriate initial stabilization, resuscitation and disposition (ICU, surgery).