Short answer · Medically reviewed summary · Last updated: 2026-05-08

Erythema Multiforme is most commonly referred to by its standard medical name, though it is occasionally historically categorized under the broader spectrum of "erythema multiforme minor" or "erythema multiforme major." While there are no true synonyms, the condition is sometimes confused with or historically grouped with Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), though these are now recognized as distinct clinical entities. Why does Erythema Multiforme have different names? Historically, the nomenclature for Erythema Multiforme was fluid because clinicians often grouped it with other severe drug-induced skin reactions. Before the 1990s, medical literature frequently used "Erythema Multiforme Major" to describe what we now clinically classify as Stevens-Johnson Syndrome.

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Erythema Multiforme synonyms

Other names for Erythema Multiforme: synonyms, acronyms and related terms used by doctors and patients.

Erythema Multiforme is also known as...

Erythema Multiforme is most commonly referred to by its standard medical name, though it is occasionally historically categorized under the broader spectrum of "erythema multiforme minor" or "erythema multiforme major." While there are no true synonyms, the condition is sometimes confused with or historically grouped with Stevens-Johnson Syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), though these are now recognized as distinct clinical entities.



Why does Erythema Multiforme have different names?


Historically, the nomenclature for Erythema Multiforme was fluid because clinicians often grouped it with other severe drug-induced skin reactions. Before the 1990s, medical literature frequently used "Erythema Multiforme Major" to describe what we now clinically classify as Stevens-Johnson Syndrome. Modern dermatological consensus has refined the classification of Erythema Multiforme to specifically refer to an acute, immune-mediated condition characterized by target-like skin lesions, usually triggered by the Herpes Simplex Virus (HSV) rather than medications.



How is Erythema Multiforme classified in medical systems?


In clinical practice, professionals use standardized codes to ensure consistent documentation across international health systems. Understanding these codes can help you navigate your medical records regarding Erythema Multiforme:



  • ICD-10-CM: L51.0 (Nonbullous erythema multiforme) and L51.1 (Bullous erythema multiforme).

  • Orphanet: Classified under ORPHA:323 (Erythema multiforme).

  • OMIM: While not a single-gene disorder, it is referenced in literature regarding immune susceptibility.



What are the historical and regional terms for Erythema Multiforme?


You may encounter older terms in legacy medical charts or international literature that are no longer preferred. These include:



  • Hebra’s Erythema Multiforme: Named after Ferdinand von Hebra, who first described the condition in 1860.

  • Erythema Exsudativum Multiforme: A descriptive term often found in older European medical texts.

  • Target Lesion Dermatitis: A descriptive, non-specific term occasionally used in clinical notes to describe the appearance of Erythema Multiforme.



Next steps



  • Consult a board-certified dermatologist to confirm that your diagnosis of Erythema Multiforme is distinct from other bullous skin diseases.

  • Join the 42 members of the Erythema Multiforme community on DiseaseMaps.org to share experiences and coping strategies.

  • Keep a detailed log of potential triggers, particularly recurring cold sores, to share with your specialist.



Medical Disclaimer: This information is for educational purposes only and does not replace professional medical advice, diagnosis, or treatment.



References



  • Orphanet (ORPHA:323) - Erythema multiforme.

  • NIH Genetic and Rare Diseases Information Center (GARD).

  • American Academy of Dermatology (AAD) guidelines on cutaneous reactions.

  • PubMed/NCBI: Classification updates on Erythema Multiforme vs. SJS/TEN.

Author: DiseaseMaps Editorial Team
Reviewed against authoritative medical sources (NIH GARD, Orphanet, OMIM)
Last updated: 2026-05-08
Medical disclaimer: This information does not substitute professional medical advice. Always consult your doctor before making health decisions.
Source: DiseaseMaps.org
2 answers
I've never heard it called anything else, except for the abbreviation EM.

Posted Apr 4, 2018 by Alicia 2800

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