This gas can build up in the intestinal tract and cause bloating, flatulence, abdominal cramping, and discomfort. Taking medications to reduce gassiness can help relieve these symptoms. Passing gas and belching is another way to remove excess gas from the bowels.
Nausea
Nausea is a feeling of discomfort with the need to vomit, though it can occur without vomiting. It is a very common symptom of many diseases and is therefore not specific to acute gastroenteritis in adults.
It can occur even without disease, as there are a lot of medications that can cause nausea and vomiting. Nausea in gastroenteritis may be due to the release of toxins from the bacteria or a delay in stomach emptying after meals (gastroparesis).
Damaged cells and immune cells release chemicals which trigger a response in the brain. The amount of chemical signals that reach the brain determines the severity of nausea and vomiting.
Fever
Fever is another common symptom of many illnesses. The presence of a fever almost always indicates there is an infection. While a fever may not always be present with acute gastroenteritis, it can be an indicator for a more serious infection.
Fevers occur as a natural defense mechanism against bacteria and viruses. The body heats itself up in an attempt to kill the pathogens. Low-grade fevers are above 38°C, while high-grade fevers are 39.4°C or higher. Prolonged high-grade fevers can cause more harm than good. High-grade fevers above 40°C for several hours to days can even cause permanent brain and nerve damage.
Dehydration-related symptoms
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