Food Safety Report: LongHorn Steakhouse, Highway 17 South, North Myrtle Beach, SC, USA 4 months ago • details 7 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills Suspected source: Steak or salad from Longhorn in North Myrtle Beach Onset: 4 to 12 hours Duration: 12 to 24 hours Additional information: My husband got sick too.