Rare diseases · Sign or symptom
Lumbar hyperlordosis
Excessive inward curvature of lower spine
HP:0002938
What it means
An abnormal accentuation of the inward curvature of the spine in the lumbar region.
Rare diseases that can present with this43
Very common80–99%
4Common30–79%
16- Achondroplasia
- Congenital muscular dystrophy with cerebellar involvement
- Developmental and speech delay due to SOX5 deficiency
- Diastrophic dysplasia
- Familial anetoderma
- Frontorhiny
- Gamma-sarcoglycan-related limb-girdle muscular dystrophy R5
- Pelvis-shoulder dysplasia
- POMT1-related limb-girdle muscular dystrophy R11
- Primary hypergonadotropic hypogonadism-partial alopecia syndrome
- Pseudoachondroplasia
- Schimke immuno-osseous dysplasia
- Spondylocarpotarsal synostosis
- Spondyloepimetaphyseal dysplasia, Handigodu type
- Spondyloepimetaphyseal dysplasia, matrilin-3 type
- Symptomatic form of muscular dystrophy of Duchenne and Becker in female carriers
Sometimes5–29%
22- Alpha-dystroglycan-related limb-girdle muscular dystrophy R16
- Autosomal dominant Charcot-Marie-Tooth disease type 2Y
- Autosomal recessive otospondylomegaepiphyseal dysplasia
- Bethlem muscular dystrophy
- Cap myopathy
- Congenital myasthenic syndrome with glycosylation defect
- Infantile hypotonia-oculomotor anomalies-hyperkinetic movements-developmental delay syndrome
- Intellectual disability-balding-patella luxation-acromicria syndrome
and 14 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
Also called: Exaggerated lumbar lordosis · Increased lumbar lordosis · Lumbar lordosis · Prominent lumbar lordosis
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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.