raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:1003

Scalp defects-postaxial polydactyly syndrome

historical

Type
Malformation syndrome
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Neonatal
Status
historical

A rare syndrome with limb malformations as a major feature characterized by congenital scalp defects and postaxial polydactyly type A. There is a wide variability of expression, with some patients showing only one of the typical manifestations. There have been no further descriptions in the literature since 1985.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enScalp defects-postaxial polydactyly syndrome
frSyndrome d'alopécie circonscrite-polydactylie
deKopfhautdefekte-postaxiale Polydaktylie-Syndrom
esSíndrome de defectos del cuero cabelludo-polidactilia postaxial
itSindrome difetti del cuoio capelluto-polidattilia postassiale
nlDefecten van scalp - postaxiale polydactylie-syndroom
ptSíndrome de defeitos no couro cabeludo-polidactilia pós-axial
plWady skóry głowy - polidaktylia pozaosiowa
csSyndrom zahrnující defekty kůže hlavy a postaxiální polydaktylii
ukCиндром дефекту шкіри голови - постаксіальної полідактилії
zh头皮缺损-轴后性多指(趾)综合征
trKafa derisi defektleri-postaksiyal polidaktili sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM181250Evalidated
ICD-10Q87.2NTBTattributedvalidated
MONDO0008403Evalidated
MeSHC536622Evalidated
UMLSC4511971Evalidated
GARD241Evalidated

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 (3):

No children.

4

Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families2 casesWorldwideCase(s)Validated4029956[PMID]_468253[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_4029956[PMID]_468253[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

4 annotations · validated 2016-06-01
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0005696Postaxial polydactyly type A
Frequent (79-30%)
HP:0002084Encephalocele
HP:0001362Skull defect
HP:0002209Sparse scalp hair
7

Sources for this card