Food Safety Report: IHOP, North Pointe Drive, Salisbury, MD, USA 1 year ago • details 18 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps, Chills, Headache Suspected source: Salad Onset: 4 to 12 hours Duration: 12 to 24 hours Additional information: Symptoms continue