Occupational hand eczema caused by nickel allergy and semi-quantified by dimethylglyoxime testing of the skin.

Conflicts of interest: The authors declare no conflict of interests. skin contact with consumer items, but nickel is also an important cause of occupational allergic contact dermatitis. Accordingly, excessive nickel exposure has been shown in many occupations (1–3). As it is important for clinicians to confirm and quantify occupational nickel exposure, practical and inexpensive tools are needed. Lidén et al. validated an acid wipe sampling method for quantification of nickel deposition on the skin (4).