FDEIA is a rare condition with a prevalence of 0.05%. It only occurs with the combination of a specific food and exercise. The patient can typically eat the food without symptoms. FDEIA only occurs if you eat and then exercise within 4-6 hours of ingestion. The reaction usually occurs within the first 30 minutes of starting physical activity. Symptoms include itchiness, hives and swelling, coughing, wheezing, chest tightness, abdominal pain, nausea, vomiting, and diarrhea.