raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:447881

Idiopathic dropped head syndrome

Synonyms: Isolated neck extensor myopathy

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

A rare acquired skeletal muscle disease characterized by severe weakness of the neck extensor muscles causing progressive reducible kyphosis of the cervical spine and the inability to hold the head up, in the absence of a known cause. Histological studies reveal a non-inflammatory myopathic picture. The clinical course is relatively benign, although cervical myelopathy may develop.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enIdiopathic dropped head syndromeIsolated neck extensor myopathy
frSyndrome de la tête tombante idiopathiqueMyopathie idiopathique cervicale
deIdiopathisches Dropped-Head-SyndromIsolierte Myopathie der Kopfextensoren
esSíndrome idiopático de cabeza caídaMiopatía idiopática de los extensores del cuello
itSindrome idiopatica della testa cadenteMiopatia isolata dei muscoli estensori del collo
nlIdiopathisch hangend hoofd-syndroomGeïsoleerde nekextensormyopathie
ptSíndrome idiopático da cabeça caída
plIdiopatyczny zespół opadania głowyIzolowana miopatia prostownika grzbietu
csIdiopatický syndrom padající hlavyIzolovaná myopatie extenzorů šíje
ukІдіопатичний синдром опущеної головиІзольована міопатія розгиначів шиї
zh特发性歪头综合征特发性颈伸肌肌病
trİdiyopatik düşük baş sendromuİzole boyun ekstansör miyopatisi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10G72.8NTBTattributedvalidated
MONDO0018654Evalidated
UMLSC3266164Evalidated

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 prevalenceUnknown—WorldwideClass onlyNot yet validatedORPHANET

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

Orphanet has no HPO annotation for this code in this release.

7

Sources for this card