Most allergies cause an immediate reaction. These include allergies to pollen, dust, animals, foods, and insects. However, metal allergy and other contact allergies are different. They cause a delayed hypersensitivity reaction that can take days or even weeks to react. Unlike immediate hypersensitivity reactions, they don’t get better with antihistamines. They are mediated by a different part of the immune system called Cell-Mediated Immunity.
Metal allergies are common contact allergies. Contact allergies affect at least 20% of the population and metal allergies, in particular, affect 10% to 15% of the population. When there is already a history of contact allergies, the incidence of multiple contact allergies goes up.
Metal Allergy Symptoms
Most of the time, contact allergies cause a rash. When implanted into the body, however, patients can have even more severe symptoms including:- Swelling
- Pain
- Draining sinuses
- Inflammation at the implant site that mimics infection