People who are severely allergic to nickel, as from earrings or belt buckles, can actually develop a rash from eating foods high in nickel.
In particular, chronic hand dermatitis has been associated with eating foods high in nickel in patients with a known allergy. If you are allergic to nickel and have a chronic rash, especially of your hands, then consider a nickel-free diet. Try to avoid:
- Nuts and Legumes (beans, lentils)
- Any canned food or canned fruit
- Hot water from the tap
- Anything acidic (like tomatoes) cooked in a stainless steel pan
- Leafy green vegetables