My mom gets a runny nose, upset stomach, and is very cold after eating sometimes. This last for a few hours then goes away. Not sure what she eats that sets it off. She usually eats 1 item and nothing else, but today she had a big mac, a couple fries, and plain vanilla sundae. She had eaten the sandwich and sundae before, but not at the same time, and she didn t get sick. She did get sick off of their fries many months ago. It s hard to tell what foods are causing it. She had icecream at friendlys and got sick, but that wasn t plain. It had fudge, no nuts.