What should you know about fresh blood in vomit?

Bright or red blood can come from the oesophagus, stomach, or the mouth and throat after forceful vomiting. Causes include irritation, ulcers, inflamed tissue, enlarged veins, swallowed blood, and other sources. Oesophageal cancer and stomach cancer can present with vomiting blood, but this symptom does not establish either diagnosis.

The amount and appearance can change quickly. Vomit that looks like coffee grounds may represent older blood. A clinician may need to assess circulation, blood tests, and the upper digestive tract to find the source.

Contact emergency medical services or go to an emergency department now, especially if bleeding is continuing. Do not drive yourself if you feel faint. Keep a sample or photograph if safe, and list medicines such as blood thinners, anti-inflammatory pain medicines, or aspirin. Avoid eating or drinking until a clinician advises you.

Tell the team about black stools, abdominal pain, liver disease, previous ulcers, recent retching, alcohol use, and any known cancer. These details help guide immediate assessment.

Treat dizziness, fainting, confusion, clammy skin, fast breathing, severe weakness, chest pain, black stools, or a large amount of blood as emergency warning signs. Even a small amount of fresh blood requires prompt advice because the source cannot be judged safely at home.

Where might the bleeding be coming from? Do I need an urgent scope or blood tests? Should I stop or change any medicine? What symptoms mean I should return immediately? How will recurrence be prevented and investigated?