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Erythema multiforme like reaction to santos rosewood (Machaerium scleroxylon) and Torreya nucifera
  1. Sayuri Uchida1,
  2. Masaaki Ogai2,
  3. Kazuhito Saito1 and
  4. Yoichiro Homma1
  1. 1 General Internal Medicine, Seirei Hamamatsu Hospital, Hamamatsu, Japan
  2. 2 Dermatology, Seirei Hamamatsu Hospital, Hamamatsu, Japan
  1. Correspondence to Dr Yoichiro Homma, yoh2007{at}


Erythema multiforme is a skin disorder characterised by target epithelial eruption, which is mainly caused by infection or drugs. In this case, we report an erythema multiforme like reaction caused by contact dermatitis against wood, especially santos rosewood. During the hospitalisation, we performed a patch test with lumber used in the patient’s workplace, and recognised a positive response to multiple woods and a simultaneous recurring eruption (flare up) outside of the test site. The findings from this case of contact dermatitis caused by frequently used industrial wood type is important for the management of occupational environments. A review of the literature on erythema multiforme like reaction due to contact dermatitis, including past case reports, has also been provided.

  • dermatology
  • exposures
  • occupational and environmental medicine

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  • Contributors SU and YH designed the study, and wrote the initial draft of the manuscript. KS and MO contributed to clinical diagnosis and interpretation of image, and assisted in the preparation of the manuscript. All other authors have contributed to interpretation, and critically reviewed the manuscript. All authors approved the final version of the manuscript, and agree to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

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

  • Patient consent for publication Obtained.

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