Rare diseases · Sign or symptom
Decreased QRS voltage
HP:0025077
What it means
Reduced amplitude (height) of the QRS complex of the electrocardiogram (EKG), defined as amplitudes of all the QRS complexes in the limb leads are less than 5 mm or amplitudes of all the QRS complexes in the precordial leads less than 10 mm.
Rare diseases that can present with this7
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.