Gustatory sweating in the differential diagnosis of food allergy

Herein reported is a 41-year-old white man with lifelong gustatory sweating over the vertex of the head induced by orange juice, tomatoes, onions, and certain nonchocolate candies and snack foods. IgE RAST and prick tests were negative to those offending foods for which test antigens were available. The types of gustatory sweating and their therapeutic modalities are summarized.