Rare diseases · Sign or symptom

Thoracic lordosis

HP:0430043

What it means

Thoracic lordosis refers to an abnormal curvature of the thoracic spine in which the thoracic spine displays lordosis (inward curve) instead of the normal kyphosis (outward curve).

Rare diseases that can present with this1

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

Thoracic lordosis

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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.