Rare diseases · Sign or symptom

Decreased circulating parathyroid hormone level

HP:0031817

What it means

An abnormally decreased concentration of parathyroid hormone.

Rare diseases that can present with this3

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

Also called: Decreased circulating PTH level · Decreased serum parathyroid hormone · Decreased serum parathyroid hormone level · Decreased serum PTH

Decreased circulating parathyroid hormone…

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This 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.