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Mycoplasma pneumoniae-induced rash and mucositis: a recently described entity
  1. Rui Pedro Santos1,
  2. Marta Silva2,
  3. Ana Paula Vieira3,
  4. Celeste Brito4
  1. 1Department of Dermatology and Venereology, Hospital de Braga, Braga, Portugal
  2. 2Department of Paediatrics, Hospital de Braga, Braga, Portugal
  3. 3Department of Dermatology and Venereology, Hospital de Braga, Braga, Portugal
  4. 4Department of Dermatology and Venereology, Hospital de Braga, Braga, Portugal
  1. Correspondence to Dr Rui Pedro Santos, drruisantos{at}


Mycoplasmapneumoniae is a common cause of respiratory infections. Although most cases are mild, some patients have extrapulmonary complications including mucocutaneous eruptions including Stevens-Johnson syndrome (SJS), toxic epidermal necrolysis (TEN) and erythemamultiforme (EM). Recently, a new entity, called M. pneumoniae-induced rash and mucositis (MIRM) was described. The authors present a clinical case difficult to classify attending to the classical classification of epidermolytic syndromes that meets the criteria proposed for the diagnosis of MIRM. The mucocutaneous disease associated with M. pneumoniae presents predominant mucositis, with scarce or absent cutaneous involvement. Because of the distinct morphology, pathophysiology and benign clinical course, MIRM should be considered as a new entity, distinct from SJS/TEN and EM.

  • Dermatology
  • Pneumonia (infectious Disease)
  • Medical Education

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  • Contributors RPS and MS contributed to the planning, conducting and reporting of the work. RPS, APV and CB contributed to the conception and design of the work. All the authors are responsible for the overall content.

  • Competing interests None declared.

  • Patient consent Obtained from guardian.

  • Provenance and peer review Not commissioned; externally peer reviewed.