raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2485

Melorheostosis

Type
Malformation syndrome
Group
Disorder
Inheritance
Not applicable
Age of onset
All ages
Status
active

Melorheostosis is a rare connective tissue disorder characterized by a sclerosing bone dysplasia, usually limited to one side of the body (rarely bilateral), that manifests with pain, stiffness, joint contractures and deformities.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enMelorheostosis
frMélorhéostose
deMelorheostose
esMelorreostosis
itMeloreostosi
nlMeloreostose
ptMelorreostose
plChoroba Leriego
csMelorheostóza
ukМелореостоз
zh肢骨纹状肥大症
trMeloreostoz

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM155950Evalidated
ICD-10M85.8NTBTindexvalidated
ICD-11LD24.1YNTBTindexvalidated
MONDO0007970Evalidated
MeSHD008557Evalidated
UMLSC0025239Evalidated
GARD9474Evalidated
MedDRA10050284Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

3

Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence<1 / 1 000 0000.09 / 100 000EuropeValue and classValidated9040882[PMID]

Value is Orphadata's ValMoy: the mean estimate per 100 000 for prevalence and incidence, the number of cases or families for case reports.

6

HPO phenotypes

17 annotations · validated 2017-12-07
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0000924Abnormality of the skeletal system
HP:0002829Arthralgia
HP:0002653Bone pain
HP:0006824Cranial nerve paralysis
HP:0011987Ectopic ossification in muscle tissue
HP:0001508Failure to thrive
HP:0100774Hyperostosis
HP:0011001Increased bone mineral density
HP:0001387Joint stiffness
HP:0001004Lymphedema
HP:0002652Skeletal dysplasia
HP:0003202Skeletal muscle atrophy
Frequent (79-30%)
HP:0100559Lower limb asymmetry
HP:0100560Upper limb asymmetry
Occasional (29-5%)
HP:0001369Arthritis
HP:0000987Atypical scarring of skin
HP:0100784Peripheral arteriovenous fistula

Run the differential on the 12 obligate / very frequent terms

7

Sources for this card