raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:324964

Chronic nonbacterial osteomyelitis/Chronic recurrent multifocal osteomyelitis

Synonyms: CNO/CRMO

Type
Disease
Group
Disorder
Inheritance
Not applicable
Age of onset
Adolescent, Childhood
Status
active

Chronic nonbacterial osteomyelitis (CNO), also known as chronic recurrent multifocal osteomyelitis (CRMO), is a chronic autoinflammatory syndrome that is characterized by multiple foci of painful swelling of bones, mainly in the metaphyses of the long bones, in addition to the pelvis, the shoulder girdle and the spine.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enChronic nonbacterial osteomyelitis/Chronic recurrent multifocal osteomyelitisCNO/CRMO
frOstéomyélite chronique non-bactérienne/Ostéomyélite multifocale chronique récurrenteCNO/CRMO · OCN/OMCR
deChronische nicht-bakterielle Osteomyelitis/rezidivierende multifokale Osteomyelitis= en
esOsteomielitis crónica no bacteriana/Osteomielitis crónica multifocal recurrente= en
itOsteomielite multifocale ricorrente cronicaCRMO
nlChronische niet-bacteriële osteomyelitis/Chronische terugkerende multifocale osteomyelitis= en
ptOsteomielite crónica multifocal recorrente
plPrzewlekłe nawracające wielookniskowe zapalenie kości i szpiku kostnegoCRMO
csChronický návratný víceložiskový kostní zánětCRMO
ukХронічний небактеріальний остеомієліт/Хронічний рецидивуючий мультифокальний остеомієліт= en
zh慢性复发性多灶性骨髓炎CNO/CRMO病
trKronik bakteriyel olmayan osteomiyelit / Kronik tekrarlayan multifokal osteomiyelit= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM259680Evalidated
ICD-10M86.3Especificvalidated
ICD-114A6YNTBTindexvalidated
MONDO9813Evalidated
UMLSC5679877Evalidated
GARD6108Evalidated

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

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (3):

No children.

Codes that Orphanet moved or referred to this one:

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Genes

0 direct

Orphanet records no gene directly on this code.

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Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 1 000 0000.3 / 100 000WorldwideValue and classValidated12183714[PMID]
Annual incidence1-9 / 100 0002.5 / 100 000WorldwideValue and classValidated12183714[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.

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HPO phenotypes

27 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002653Bone pain
HP:0100774Hyperostosis
HP:0002754Osteomyelitis
Frequent (79-30%)
HP:0000944Abnormal metaphysis morphology
HP:0003468Abnormal vertebral morphology
HP:0005930Abnormality of epiphysis morphology
HP:0001369Arthritis
HP:0005464Craniofacial osteosclerosis
HP:0000969Edema
HP:0011227Elevated circulating C-reactive protein concentration
HP:0003565Elevated erythrocyte sedimentation rate
HP:0012378Fatigue
HP:0002797Osteolysis
HP:0004396Poor appetite
HP:0001824Weight loss
Occasional (29-5%)
HP:0100781Abnormality of the sacroiliac joint
HP:0001061Acne
HP:0001903Anemia
HP:0006824Cranial nerve paralysis
HP:0001945Fever
HP:0002037Inflammation of the large intestine
HP:0100847Palmoplantar pustulosis
HP:0000989Pruritus
HP:0003765Psoriasiform dermatitis
HP:0002650Scoliosis
HP:0000988Skin rash
HP:0002633Vasculitis

Run the differential on the 3 obligate / very frequent terms

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Sources for this card