The incidence of EoE did not increase between 2001 and 2006. Onset of symptoms did not vary by season, indicating that allergens triggering EoE are present all year around. Vomiting and feeding disorders are seen in young children, while dysphagia and heartburn are seen in older children. As endoscopic findings were normal in 50 % of cases, an esophageal biopsy should be performed in all patients with suspected EoE.