It’s happened often enough the multiple physicians have posted videos on YouTube about it. Here’s a short 30 second one.
https://youtube.com/shorts/NqN8ZkJKwGo?si=-q2YU_CXwqJUxz7B
Please make an appointment with your primary care physician and get a diagnosis of your condition. Your Dr. may refer you to an allergist or dermatologist to confirm the diagnosis.
Probably the most common reason is an allergic reaction to nickel. Nickel is used in the hardening process of stainless steel, aluminum and sapphire crystal.
>>In fact, it is estimated that more than 18 percent of people in North America are allergic to nickel, including 11 million children in the U.S.<<
https://www.aad.org/public/diseases/eczema/insider/nickel-allergy
https://www.mayoclinic.org/diseases-conditions/nickel-allergy/symptoms-causes/syc-20351529
A visit to an allergist or dermatologist will get it cleared up. They may recommend you reduce contact, use a cover etc. Please let us know what the diagnosis is. 😀