Technically, yes, food poisoning can cause hallucinations. Hallucinations caused by food illness isn't overly common, however, it can happen. Hallucinations are generally the mark that something very serious is wrong. Therefore, if you are having them (no matter the reason,) you should absolutely see a doctor or go to the ER.
Common ailments that accompany food poisoning include nausea, vomiting, diarrhea, and fever. Vomiting and diarrhea are both causes of dehydration which can complicate things and running a very high fever can cause delirium and even hallucinations. Again, regardless as to what is causing this symptom, it is imperative to get to a doctor.
More serious food poisoning cases can cause hallucinations. This is one of the more serious symptoms, and if one is experiencing hallucinations, contact the doctor as soon as possible. If you cannot see the doctor, go to the emergency room. Hallucinations, in general, are caused by mental illnesses such as schizophrenia, but in the rare cases that it’s not from one of the usual culprits, something’s seriously wrong.
Typical food poisoning symptoms are diarrhea, nausea, vomiting, and abdominal pain and cramps. These usually follow the culprits of all food poisonings, and are fairly universal. They’re not usually serious enough to cause a trip to the emergency room. A fever of more than 100.4 degrees or so can be cause for alarm, and sometimes overheating can add to the probability of having hallucinations.