BACKGROUND: Food allergy may be life-threatening, and patients affected need to receive
accurate diagnoses and treatment. Hazelnut has often been implicated as responsible for
allergic reactions, and trace quantities can induce systemic reactions. OBJECTIVE: The aim
of this study was to evaluate the efficacy and tolerance of sublingual immunotherapy with a
standardized hazelnut extract in patients allergic to hazelnut. METHODS: This was a
randomized, double-blind, placebo-controlled study. Inclusion criteria were a history of …