Clinical Pathway for the Assessment of Penicillin Drug Allergy
  • Only 10% of patients labeled with PCN allergy are actually allergic.
  • 80% of patients that are truly allergic will outgrow this allergy within 10 years.
History of Severe Cutaneous
Adverse Reaction
History of
All Other Reactions
  • Steven Johnson Syndrome (SJS)
  • DRESS
    • Drug Reaction w/Eosinophilia and Systemic Symptoms
  • Erythema Multiforme
  • Serum Sickness Like Reaction
  • Family History Only
  • GI Symptoms
  • Patient Tolerated Drug Since Initial Reaction
Avoid Penicillin
Allergy Clinic Referral
Remove Allergy Label
  • For IP patients requiring antibiotics, consult allergy
  • Allergy Visit
    • Skin Testing or Oral Challenge as Clinically Indicated
Severe Cutaneous Reactions
SJS
  • Severe reaction with fever, malaise
  • Significant rash follows, ultimately sloughing of the skin
  • Mucosal and ocular involvement ultimately sloughing of the skin
DRESS
  • Rash
  • Hematologic abnormalities (eosinophilia, atypical lymphocytosis)
  • Lymphadenopathy
  • Internal organ involvement (liver, kidney, lung).
Erythema Multiforme
  • Rash with target-like lesions, often accompanied by erosions or bullae
  • Involves mucosal surfaces
Serum-Sickness Like Reaction
  • Rash, fever
  • Polyarthralgias or polyarthritis
  • May appear ill, uncomfortable during the acute febrile stag
  • Self-limited, excellent prognosis once the responsible drug stopped
Posted: February 2019
Revised: April 2019
Authors: J. Lee, MD; S. Swami, MD; R. Grundmeier MD; R. Saltzman MD;C. Tucker MD; R. Tenney-Soeiro, MD;
J. Lavelle MD; J. Gerber MD; R. Stinson, CRNP; T. Brown-whitehorn, MD; J. Cockerham, RN; M. Russo, MD;
M. Hayes, Pharm.D; V. Scheid, MD; L. Biggs, MD