An Unusual Case of Contact Dermatitis

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1 Scopus citations


We report a case of acute psoriasiform contact dermatitis of the forehead and scalp related to the use of a low-laser light cap. The patient had a positive patch test to dimethylol dihydroxyethyleneurea (DMDE), methylisothiazolinone, kathon CG, and cobalt. We believe that DMDE in the fabric of the cap was responsible for the allergic contact dermatitis in this case as the lesions resolved with cessation of cap use.

Original languageEnglish (US)
Pages (from-to)163-165
Number of pages3
JournalSkin Appendage Disorders
Issue number3
StatePublished - Aug 1 2017


  • Allergy
  • Dimethylol dihydroxyethyleneurea
  • Hair
  • Hair loss
  • Low-level light therapy
  • Psoriasiform contact dermatitis

ASJC Scopus subject areas

  • Dermatology


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