Common Symptoms.
Symptoms usually start to appear quite quickly, most commonly within 72 hours after food consumption. They tend to include:
Fever.
One of the first signs of the immune system responding to the pathogen. The body increases its temperature to kill off harmful bacteria and viruses.
Vomiting.
One of the quickest ways to get rid of the pathogen. This symptom is often the body’s first response.
Diarrhea.
Like vomiting, diarrhea is the body’s reaction to the presence of bacteria. The difference here is that it proves that the pathogen is in the intestines. It can also be symptomatic of gastroenteritis.
Abdominal pain.
Tends to appear rapidly and be acute, painkillers fair to relieve it.
Dehydration.
Especially after vomiting and diarrhea. Leads to weakness, dark urine, dry mouth and skin.
Fatigue.
The body is working hard fighting the pathogen, so it’s very likely that severe tiredness and fatigue will appear.
The symptoms may be mild or very intense, depending on the person and the pathogen involved. In general, food poisoning affects several people who have shared the same meal.