Allergic contact dermatitis is a type of contact dermatitis that occurs when a patient comes in contact with an irritating substance and has an allergic response. Patients may find that they are allergic to jewelry, or the metals and plastics used to make jewelry. Nickel is frequently found in buttons on clothing as well as jewelry and is a common cause of allergic contact dermatitis, so some patients may complain of a nickel allergy.
Symptoms of allergic contact dermatitis include rash, inflammation, redness, itching, and swelling. A rash caused by allergic contact dermatitis tends be limited to the area of exposure. Symptoms can last for up to a month before they resolve.