Rare diseases · Sign or symptom
Heart block
HP:0012722
What it means
Impaired conduction of cardiac impulse occurring anywhere along the conduction pathway.
Rare diseases that can present with this15
Common30–79%
3Sometimes5–29%
9- Adult Refsum disease
- Atrophoderma vermiculata
- Carnitine palmitoyl transferase II deficiency, neonatal form
- Cartilage-hair hypoplasia
- Congenitally corrected transposition of the great arteries
- Familial dilated cardiomyopathy with conduction defect due to LMNA mutation
- Neonatal lupus erythematosus
- Sarcoidosis
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.