Repeated Illness from Burger - Five Guys, Rotterdam Zuid-Holland

170-172 Hoogstraat, Rotterdam, 3011 PV Zuid-Holland, Netherlands

This is my second time having the same problem, i recently got a check up and i have never been healthier before in allergy/immune system wise. I ordered a hamburger with onions and ketchup in the 1st time and i had extreme cramps and diarrhea in the middle of the night, i thought i was sick and in the second time with the sane order it happened way worse than before. I almost passed out because of the cramps considering my high pain tolerance. | Symptoms: Nausea, Diarrhea, Vomiting, Stomach Pain, Cramps, Chills