Rare diseases · Sign or symptom
Chronic infection
HP:0031035
What it means
Presence of a protracted or persistent infection by a pathogen potentially related to an underlying abnormality of the immune system that is not able to clear the infection.
Rare diseases that can present with this14
Sometimes5–29%
9- Acquired idiopathic sideroblastic anemia
- Beta-thalassemia major
- Bronchogenic cyst
- Dietary iron overload disease
- Florid cemento-osseous dysplasia
- Myelodysplastic neoplasm with increased blasts
- Myelodysplastic syndrome associated with isolated del(5q) chromosome abnormality
- Opsoclonus-myoclonus syndrome
and 1 more in this range
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
Tracking symptoms like this for someone? Eleplan keeps symptoms, diagnoses, medications and every specialist in one plan.
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.