Food Safety Report: Portillo's Harwood Heights, West Lawrence Avenue, Harwood Heights, IL, USA 4 months ago • details 22 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Portillo’s Italian beef Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me