Occupational allergic contact dermatitis caused by cobalt in machine oil

Anne B. Simonsen*, Ulrik F. Friis, Jeanne D. Johansen, Claus Zachariae, Jens Jørgen Sloth, Jacob P. Thyssen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review


Cobalt is used in the creation of hard metal alloys, because of its ability to bind tungsten and carbon.1 This allows for increased resistance to wear, which is essential for mechanical parts exposed to heavy strain.2 Occupational allergic cobalt dermatitis has traditionally been observed in metal, construction and pottery workers following direct skin contact with cobalt ions from alloys, paint, porcelain, cement, and leather.3, 4 We present a case of severe allergic contact dermatitis caused by occupational exposure to machine oil that was contaminated with cobalt residues.
Original languageEnglish
JournalContact Dermatitis
Issue number1
Pages (from-to)59-61
Number of pages3
Publication statusPublished - 2019


  • Allergic contact dermatitis
  • Case report
  • Cobalt
  • Occupational contact dermatitis

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