Blood in vomit with food poisoning

Food poisoning commonly presents with vomiting, nausea, abdominal pain, diarrhoea or fever. Forceful or repeated vomiting can irritate or tear small blood vessels in the throat or food pipe, causing streaks of fresh blood. Blood may also come from a stomach or digestive-tract problem that is unrelated to the food poisoning. The condition food poisoning can present with vomiting, but vomiting blood should not be assumed to be caused by it.

Tell the clinician when symptoms began, what you ate, whether other people are ill, and whether the blood was bright red or dark and grainy. These details help distinguish irritation from more serious bleeding.

Stop trying to eat large meals while actively vomiting. If you can swallow safely, take small frequent sips of water or an oral rehydration solution. Oral rehydration therapy replaces fluid and salts lost through vomiting or diarrhoea. Keep a sample or photograph of the vomit if practical, and bring a list of medicines. A clinic may use IV fluid therapy if dehydration is severe or you cannot keep fluids down.

Call emergency services for ongoing or large-volume blood, coffee-ground vomit, fainting, confusion, severe abdominal pain, difficulty breathing, very little urine or an inability to keep even small sips down. Older adults, children and people with serious long-term conditions can become dehydrated quickly and should seek advice early.

Ask whether the bleeding could be from retching, how to replace fluids safely, which medicines to avoid, and what symptoms mean you need hospital care. Ask how to monitor urine, dizziness and ongoing vomiting at home.