What does fever feel like with gastroenteritis?

Fever is a common presentation of Gastroenteritis and may feel like heat, shivering, sweating, fatigue, headache, or aching muscles. It commonly appears with watery diarrhoea, vomiting, nausea, stomach discomfort, and poor appetite. A thermometer gives a clearer picture than touch alone. Some people feel cold during a fever, then become hot or sweaty as the temperature changes.

Gastroenteritis irritates the stomach and intestines, often because of an infection. Fever is part of the immune response; vomiting and diarrhoea can remove fluids and salts from the body. The illness may spread easily between people, so handwashing and separate towels can reduce transmission. Fever with digestive symptoms does not show whether the cause is viral, bacterial, or something else.

Sip water or an oral rehydration solution often, using small amounts if nausea is strong. Rest, eat light foods when ready, and avoid alcohol until you feel recovered. Wash hands with soap and water after using the bathroom and before handling food. Keep track of urination, alertness, vomiting, and stool frequency. Use fever medicine only as directed and check with a pharmacist if you have other illnesses or take regular treatment.

Contact a clinician for persistent fever, worsening stomach pain, ongoing vomiting, blood in stool, or diarrhoea that is not settling. Seek urgent help for fainting, confusion, severe weakness, inability to drink, very little urine, or a dry mouth with worsening dizziness. Children, older adults, pregnant people, and those with long-term conditions can become dehydrated more quickly and may need earlier advice.

Ask how much fluid to take, whether an oral rehydration product is appropriate, and whether you need an examination or test. Describe the fever pattern, vomiting and stool changes, abdominal pain, recent travel or shared meals, and any medicines already taken.