Why does gastroenteritis cause nausea?

Infection or another trigger can inflame the digestive lining and alter how the stomach empties. The nervous system interprets these changes as nausea, sometimes alongside cramps, diarrhoea or vomiting. Nausea is a very common presentation of Gastroenteritis.

Feeling sick does not by itself establish the reason for symptoms. Food intolerance, medicines, pregnancy, migraine and illnesses outside the digestive system can also cause nausea.

Use frequent small sips instead of large drinks. Water, oral rehydration solution, broth or another drink you tolerate may be easier when served cool. Gradually try simple foods once nausea eases; rich, spicy or strongly scented foods may be harder to manage at first.

Rest in an upright or slightly raised position after drinking. A pharmacist can advise on suitable symptom relief and whether it is appropriate alongside your current medicines.

Get prompt medical advice if you are unable to keep fluids down, urinate much less than usual, feel dizzy on standing, or develop increasing weakness. Urgent assessment is needed for severe abdominal pain, blood in vomit or stool, confusion, trouble breathing, or a severe headache with a stiff neck.

Contact a clinician early for a young child, an older adult, pregnancy, kidney disease, diabetes or a weakened immune system.

Ask which drinks are most appropriate, what dehydration signs matter in your situation, and whether an anti-nausea medicine is suitable. Tell the clinician when symptoms began, whether others around you are ill, and whether you have recently travelled or changed medicines.