Food Safety Report: Portillo's Naperville, 950 E Ogden Ave, Naperville, IL, USA 2 years ago • details 73 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills, Headache Suspected source: Tamale and/or chopped salad from Portillo’s Onset: Less than 4 hours Duration: 12 to 24 hours Sick: Me