In 1860 von Hebra first described Erythema Exudativum Multiforme.  The original disease described is now called Erythema Multiforme Minor or Herpes Simplex Associated Erythema Multiforme and is often associated with a recurrent herpetic infections.  When cutaneous lesions are accompanied with mucosal membrane involvement the cause is most often related to Mycoplasma infection (pneumonia) and is… Read more »