Your favorite ring leaves a rash around your finger. Your earlobes turn red when you wear a pair of earrings.\nAs many as 10 to 15 percent of Americans suffer from a metal allergy. For these people, exposure to common metals, such as nickel, produces an allergic reaction. Many common items can bring about a metal allergy outbreak \u2014 including cellphones, belt buckles, car keys, zippers, and coins\nYou may notice symptoms such as itchiness, dry patches, and blistery rashes. These are signs that your body\u2019s immune system is overreacting to metal exposure.\nRELATED:\u00a0How to Beat Your Spring Allergies\nCauses of Metal Allergies\nMetal allergies are usually a reaction to nickel, which you come in contact with frequently. Items containing nickel include:\n\nJewelry\nClothing fasteners (zippers, snaps, etc.)\nBelt buckles\nEyeglass frames\nCoins\nKeys\nCell phones and other electronic devices\nMetal tools\nMedical devices\nSome foods\n\nIn some cases, allergic reactions are also caused by cobalt and chromium.\nWhat Does a Metal Allergy Look Like?\nAn allergic reaction to metal usually causes symptoms such as:\n\nRedness or other changes in skin color\nSkin rash or bumps\nItching\nPatches of dry skin\nBlisters\u00a0(in severe cases)\n\nIn the case of a nickel allergy, symptoms may appear after your first exposure to nickel or after repeated contact with it.\nDoctors aren\u2019t sure why some people are prone to metal allergies. Once you\u2019ve developed a reaction to nickel or another metal, your immune system will always be sensitive to it, causing reactions upon exposure.\nWhen Should I See a Doctor About My Metal Allergy?\nTalk to your doctor or dermatologist about rashes, blistering, and itchiness. Your doctor can diagnose your metal allergy by conducting allergy tests.\nKnown metal allergies can be treated at home with simple, over-the-counter products. At-home metal allergy treatments include:\n\nSoothing lotions to ease itching\nRegular application of moisturizers to the skin\nWet compresses to help heal blisters and ease itching\n\nSee a doctor if these treatments do not alleviate the symptoms. If your rash is infected, doctors may treat it with antibiotics. Doctors may also prescribe the following medicines to reduce skin irritation:\n\nCorticosteroid cream\nNonsteroidal cream\nOral corticosteroid or antihistamine\n\nTo prevent an allergic reaction to metal, avoid contact with metals that irritate your skin. For example, choose nickel-free jewelry, cover electronics with protective cases, and prevent clothing closures like zippers and snaps from touching skin.