The hypothesis that certain foods or allergens might bring about convulsions has been suggested repeatedly in the literature over the last century. Some clinical studies have highlighted an unusually high prevalence of allergic disorders in patients with epilepsy. This paper reports the consistent disappearance of partial idiopathic epilepsy symptoms in a nine-year-old patient as a result of diet free of cow's milk protein. This case appears to confirm the possible role of food allergy in certain types of epilepsy in patients of pediatric age.