This an uncommon issue that may occur in some people. Yet it’s common enough the multiple physicians have post videos on YouTube about it. I’ve linked below to a short 30 second video with a doctor explaining it.
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.
Please let the community know what the diagnosis is and I hope everything goes well.
You may have contact dermatitis caused by an allergic reaction or sensitivity to Nickel in the metal cases or bands. 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