I'm a celiac and require gluten free food. Any suggestions for gluten free pizza in Venice, Naples and Sorrento?
This site allows you to search for gluten free restaurants by region: http://www.dspizzapoint.com/en/ Italians are well aware of Celiac and every is child is tested for it so you shouldn't have too many problems.
Other than pizza: One of my travel companions needs gluten-free food and there is lots of it in Italy! We told our B&Bs that he needed to eat gluten-free and they had special breakfast items for him. Don't overlook pharmacies for gluten-free snacks. There is also gluten-free gelato available ("senza gluten").