Nickel allergy is primarily caused by nickel salts, not the nickel metal itself. This allergy manifests as contact dermatitis, triggered when nickel interacts with perspiration, leading to corrosion of jewelry or watches. The immune response to these nickel salts is what results in allergic reactions. Understanding this mechanism is crucial for managing and preventing nickel allergies.
PREREQUISITESIndividuals with nickel allergies, dermatologists, jewelers, and anyone involved in the design or manufacturing of jewelry and accessories.
http://corrosion-doctors.org/Allergies/nickelallergy.htmIn fact the allergy is not caused by nickel itself but by the nickel salts which are formed under the effect of perspiration in contact with the piece of jewellery piece or watch. This phenomenon is always accompanied by corrosion of the object.