Nail‐fold contact dermatitis from coffee powder

Airborne allergic contact dermatitis caused by coffee beans in a coffee roaster

“…Allergens have not yet been identified. In past cases, 2‐5 dermatitis was mainly limited to the site of direct contact whereas, in our case, dermatitis additionally occurred on areas such as the face, neck, and postauricular folds, which did not have direct contact with the coffee products. The patient lacked eruption only on the skin covered by her uniform.…”

“…According to several coffee‐related contact dermatitis reports, green coffee beans 2,3 or roasted coffee powder 4,5 were considered to be the possible cause. Allergens have not yet been identified.…”