Erythema multiforme

external

• Causes

  • Herpes simplex virus
  • Mycoplasma pneumoniae
  • Systemic lupus erythematosus
  • Penicillin
  • Sulphonamide
  • Sulphonylurea
  • Barbiturate
  • Secondary syphilis
  • Salicylate poisoning
  • Orf
  • Phenytoin
  • Antimalarial drug
  • Polyarteritis nodosa
  • Dermatomyositis
  • Disseminated cancer
  • Myeloma
  • Group A streptococcus
  • Typhoid fever
  • Histoplasma capsulatum
  • Inflammatory bowel disease

• Effects

  • Stevens-Johnson syndrome
  • Oral ulcer
  • Target lesion
  • Aphthous ulcer
  • Cutis laxa

• Parents

  • Macular rash
  • Erythema

• Description

  • "50% idiopathic"