raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:75567

Primary progressive freezing gait

Synonyms: PPFG

Type
Clinical syndrome
Group
Disorder
Inheritance
Unknown
Age of onset
Adult
Status
active

Primary progressive freezing gait is a rare, heterogeneous, progressively incapacitating neurodegenerative disease characterized by freezing of gait (usually during the first 3 years), later associating postural instability, eventually resulting in a wheelchair-bound state. Other features may include mild bradykinesia, rigidity, postural tremor, hyperreflexia, speech disorder and dementia. The disease is unresponsive to dopaminergic treatments.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPrimary progressive freezing gaitPPFG
frFreezing progressif primaire de la marche= en
dePrimäre fortschreitende Erstarrung der Gehbewegung= en
esCongelación progresiva y primaria de la marcha= en
itBlocco motorio primitivo progressivo della marcia
nlPrimaire progressieve bevroren gang= en
ptAcinésia súbita primária progressiva
plPierwotne postępujące zatrzymanie chodu= en
csPrimární progresivní zamrzající chůze= en
ukПервинна прогресуюча завмираюча хода= en
zh原发性进行性冻结步态= en
trPrimer ilerleyici yürüme donukluğu= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10G31.8NTBTattributedvalidated
ICD-118A0YNTBTindexvalidated
MONDO0019160Evalidated
UMLSC4275078Evalidated

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

21 annotations · validated 2018-05-07
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0002359Frequent falls
HP:0001288Gait disturbance
HP:0002172Postural instability
Frequent (79-30%)
HP:0002167Abnormality of speech or vocalization
HP:0002067Bradykinesia
HP:0002169Clonus
HP:0001347Hyperreflexia
HP:0000822Hypertension
HP:0002174Postural tremor
HP:0002063Rigidity
Occasional (29-5%)
HP:0003487Babinski sign
HP:0002120Cerebral cortical atrophy
HP:0000726Dementia
HP:0002015Dysphagia
HP:0002141Gait imbalance
HP:0007772Impaired smooth pursuit
HP:0100315Lewy bodies
HP:0012452Restless legs
HP:0000763Sensory neuropathy
HP:0002362Shuffling gait
HP:0000020Urinary incontinence

Run the differential on the 3 obligate / very frequent terms

Annotation source: 12433266[PMID]_28489770[PMID]_21135389[PMID]_16476942[PMID]

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Sources for this card