Contact dermatitis is a red, itchy rash caused by direct contact with a substance or an allergic reaction to it. The rash isn’t contagious or life-threatening, but it can be very uncomfortable. Many substances can cause such reactions, including soaps, cosmetics, fragrances, jewelry and plants. Oct 4, 2018
What does a nickel allergy rash look like?
Nickel contact dermatitis produces a characteristic red, itchy rash that resembles eczema. In this picture, it appears around the belly button after the skin of the affected individual came in contact with either a metal snap on blue jeans or a metal belt buckle.