A Retrospective Study of Aimed Patch Testing with Aqueous Nickel Sulfate Hexahydrate at 30% and 15% in Patients with Dermatitis
Background Sometimes, patients with a history of metal intolerance react negatively or doubtfully to nickel at patch testing. Objective The aim of the study was to investigate whether aqueous nickel sulfate hexahydrate at 15% and 30% traces more contact allergy than the nickel preparation in the baseline series at 5%. Methods In the period 1995-2015, more than 800 of 16,059 patients with a negativ