Throwing up with no fever: what to know

A fever is not present with every cause of vomiting. A stomach virus or food-related illness may begin with vomiting before other symptoms appear, while reflux, migraine, motion sickness, anxiety, pregnancy, alcohol, or a medicine can also trigger it. Repeated vomiting can lead to dehydration even when you do not feel hot.

Notice the pattern: when it began, how often it happens, whether there is diarrhoea or pain, and whether you can keep small sips down. Blood, green material, severe abdominal pain, a swollen abdomen, confusion, or a severe headache changes the level of concern.

Rest and take frequent small sips of water or an oral rehydration drink. If drinking triggers more vomiting, pause briefly and try smaller amounts more often. Once fluids stay down, choose plain foods such as rice, toast, bananas, or soup, and avoid alcohol, rich meals, and strong smells for a while.

Do not give anti-vomiting medicine to a child or take a new medicine without checking with a pharmacist or clinician. Keep track of urination, dizziness, dry mouth, and worsening weakness, because these can signal fluid loss.

Seek urgent medical help for vomiting with blood or coffee-ground material, green vomit, severe or worsening pain, a rigid or swollen abdomen, fainting, confusion, breathing difficulty, or a sudden severe headache. Prompt assessment is also needed if you cannot keep fluids down, pass very little urine, or are becoming unusually drowsy.

Get medical advice sooner for a baby, an older adult, pregnancy, diabetes, kidney disease, or another condition that makes fluid loss more risky. A clinician can assess the pattern and decide whether testing or treatment is needed.

Ask: What causes fit my symptoms and medicines? How can I replace fluids safely? Which warning signs mean I should attend urgent care? Should I change any regular medicine, and when should I return if vomiting continues?