Thank you. I will try this. I am amazed at the number of Drs that do not consider nickel allergy. For 7 years I took prescription for shingles. A sharp PA in the Dermatology Dept. finally did a biopsy. Nickel allergy not shingles. Be careful of flu vaccine. It also has nickel in it although the Pharmacist said it did not. After my hands and feet turned red and itched insanely I research the shot on the internet. Germany is way ahead of the US in dealing with this allergy