Summary
Nickel allergy is a contact allergy in which redness, itching and a rash appear on the skin several hours after direct contact with a substance containing nickel. If the presence of this allergy has been confirmed by an allergy test, one should avoid contact with nickel if possible, paying attention to both metallic objects and food. Eczema can be treated with creams and ointments and usually heals completely within a few days.