Low-Nickel Diet Scoring System for Systemic Nickel Allergy

Background Consumption of nickel in the diet leads to spongiotic dermatitis in a dose-related fashion in individuals who are allergic to nickel. Dietary modification to reduce nickel intake leads to resolution of this dermatitis. Objective This study aims to create an evidence-based, user-friendly diet to assist patients in reducing dietary nickel intake. Methods Food and Drug Administration data on the nickel content of foods were combined with serving size information to calculate the upper limit of nickel per serving for a variety of foods. Based on these calculations, a point system was created that allows patients to reduce their nickel intake below the typical threshold for elicitation of the spongiotic dermatitis. Conclusions A simplified point-based diet can help patients with dermatitis due to dietary nickel consumption.