Food Safety Report: Dairy Queen (Treat Only), Santo Road, San Diego, CA, USA 7 months ago • details 4 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Brownie Batter Blizzard Onset: 4 to 12 hours Duration: Several days Sick: Me