Rare diseases · Sign or symptom
Hematemesis
Vomiting blood
HP:0002248
What it means
The vomiting of blood.
The source of hematemesis is generally the upper gastrointestinal tract.
Rare diseases that can present with this13
The range is how often this sign appears among people diagnosed with each disease — it is not a probability of having any of them. Many of these signs also occur in common, non-rare conditions. A sign on this page is a conversation to have with a clinician, not a conclusion.
Part of the broader category
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Start free with EleplanThis page uses the Human Phenotype Ontology (2026-06-23) — Human Phenotype Ontology Consortium, hpo.jax.org. Disease associations from Orphanet (INSERM), CC BY 4.0. Content is educational and is not medical advice.