Allergic contact dermatitis due to nickel
Nickel is a hard, malleable and ductile metal that forms fundamentally divalent compounds, mostly nickel salts (Chloride, Sulfate, Nitrate) of bluish green color. It is the most common cause of allergic contact dermatitis in patients undergoing patch tests. Where do you find it? In multiple everyday objects: jewelry, scissors, keys, doorknobs, coins, clothing buttons, belt…
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