Most common precipitant of contact dermatitis is -
nickel is the most common sensitisers all over the world. the prevelance of nickel sensitivity varies from 4-13%. nickel produces allergic contact dermatitis. clinical presentation: exudative eczema, nummular eczema or dry lichenified eczema. lesions appear beneath earrings, bracelets, bangles, hairpins, rings, wrist watches,safetypins, buttons, stethoscopes. IADVL textbook of dermatology, contact dermatitis page 559
Gold
Nickel
Silver
Iron
Dermatitis