The nickel allergy is an increasingly common problem that can not only cause skin symptoms but also affect the entire body. Many people are unaware that nickel can enter their bodies not only from jewelry and metal objects but also from certain foods. Those who are sensitive to nickel often experience headaches and abdominal pain, bloating, as well as skin issues such as hives. Nickel allergic reactions occur particularly when nickel comes into direct contact with the skin, such as when wearing metal belt buckles or jewelry. However, nickel allergy syndrome can encompass a much broader spectrum of symptoms that are not always related to direct skin contact. Diagnosing and…