raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2833

Stiff skin syndrome

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Childhood, Infancy, Neonatal
Status
active

Stiff skin syndrome is a rare, slowly progressive cutaneous disease characterized by rock-hard skin bound firmly to the underlying tissues (mainly on the shoulders, lower back, buttocks and thighs), mild hypertrichosis and hyperpigmentation overlying the affected areas of skin, as well as limited joint mobility (mainly of large joints) with flexion contractures. Cutaneous nodules, affecting mostly distal interphalangeal joints, as well as extracutaneous manifestations, including diffuse entrapment neuropathy, scoliosis, a tiptoe gait and a narrow thorax, may be associated. Restrictive pulmonary changes, muscle weakness, short stature and growth delay have also been reported. No vascular hyperreactivity, immunologic abnormalities nor visceral, muscular or bone involvement has been described.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enStiff skin syndrome
frSyndrome de la peau parcheminée
deStiff-skin-Syndrom
esSíndrome de la piel apergaminada
itSindrome della cute rigida
nlStijve huid-syndroom
ptSíndrome da pele rígida
plZespół sztywnej skóry
csSyndrom tuhé kůžeStiff skin syndrom
ukСиндром жорсткої шкіри
zh皮肤僵硬综合征
trSert cilt sendromu

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM184900Evalidated
OMIM228020BTNTvalidated
ICD-10L98.8NTBTattributedvalidated
ICD-11EE6YNTBTindexvalidated
MONDO0008492Evalidated
MeSHC566112Evalidated
UMLSC1861456Evalidated
GARD5025Evalidated
MedDRA10085085Evalidated

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

1 direct
GeneAssociationStatusHGNCEnsemblOMIMLocusNameSource of validation
FBN1Disease-causing germline mutation(s) inAssessedHGNC:3603ENSG0000016614713479715q21.1fibrillin 120375004[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families54 casesWorldwideCase(s)Validated27846975[PMID]_26944597[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_27846975[PMID]_26944597[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

24 annotations · validated 2025-07-24
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0100679Lack of skin elasticity
HP:0001376Limitation of joint mobility
HP:0001072Thickened skin
Frequent (79-30%)
HP:0000953Hyperpigmentation of the skin
HP:0000998Hypertrichosis
Occasional (29-5%)
HP:0003119Abnormal circulating lipid concentration
HP:0003011Abnormality of the musculature
HP:0008065Aplasia/Hypoplasia of the skin
HP:0004325Decreased body weight
HP:0000501Glaucoma
HP:0000822Hypertension
HP:0007328Impaired pain sensation
HP:0100578Lipoatrophy
HP:0011800Midface retrusion
HP:0001324Muscle weakness
HP:0000787Nephrolithiasis
HP:0009830Peripheral neuropathy
HP:0000541Retinal detachment
HP:0000407Sensorineural hearing impairment
HP:0004322Short stature
HP:0000486Strabismus
HP:0001482Subcutaneous nodule
HP:0005978Type II diabetes mellitus
Very rare (<4-1%)
HP:0030057Autoimmune antibody positivity

Run the differential on the 3 obligate / very frequent terms

Annotation source: 40551142[PMID]

7

Sources for this card