Allergic reactions to silver jewelry can take years to develop because it takes time for the surface of the jewelry to tarnish. A silver jewelry allergy is really a nickel allergy.

The most common skin rash from a food allergy that can appear on the hands and ankles is hives, according to MedlinePlus. Hives are welts that form within a matter of minutes after someone consumes a food he is allergic to.

After using razors, some people break out, where the skin on the face or legs becomes irritated after shaving. In most cases, the friction of the razor on your skin is causing the breakout. A few razor users might be allergic to the coating of nickel that can be found on the surface of most razors.

Many are aware of the reaction potential of poison oak, ivy and sumac, however, many don’t know that mangoes, cashews and ginkgo biloba can cause a reaction.