Another common symptom of many types of food poisoning is vomiting. This symptom may occur within just a few hours after eating something bad or it could take up to a week for this symptom to appear. This is one of the reasons it can be difficult to diagnose food poisoning, because there are times when the cause of the distress is not known and it can be hard to blame a food that you ate more than a week ago for causing you to vomit and possibly experience other digestive issues such as diarrhea.
Since most bacteria and viruses that cause food poisoning affect the digestive system the most, vomiting and diarrhea are two of the most common symptoms that are experienced. The symptoms of food poisoning can be mild to severe and will depend on the type of virus or bacteria that has caused the issue.