raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:100976

Bathing suit ichthyosis

Synonyms: BSI

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

Bathing suit ichthyosis (BSI) is a rare variant of autosomal recessive congenital ichthyosis (ARCI) characterized by the presence of large dark scales in specific areas of the body.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enBathing suit ichthyosisBSI
frIchtyose en maillot de bainBSI · Bathing suit ichthyosis
deBathing-suit-IchthyoseBSI · Badeanzug-Ichthyose
esIctiosis del área del traje de baño= en
itIttiosi a costume da bagno
nlBadpak-ichthyosisBSI · Bathing suit ichthyosis
ptIctiose em fato de banho
plRybia łuska typu Bathing suit= en
csPlavková ichtyóza= en
ukІхтіоз купального костюма= en
zh泳衣鱼鳞病= en
trBanyo iktiyozu= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM242300NTBTvalidated
ICD-10Q80.2NTBTattributedvalidated
ICD-11EC20.02NTBTindexvalidated
MONDO0015085Evalidated
UMLSC4511230Evalidated

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
TGM1Disease-causing germline mutation(s) inAssessedHGNC:11777ENSG0000009229519019514q12transglutaminase 116968736[PMID]_20301593[PMID]
5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families20 casesWorldwideCase(s)Validated[EXPERT]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET

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

18 annotations · validated 2019-06-26
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0025092Epidermal acanthosis
HP:0008064Ichthyosis
HP:0040189Scaling skin
HP:0001072Thickened skin
Frequent (79-30%)
HP:0007460Autoamputation of digits
HP:0007479Congenital nonbullous ichthyosiform erythroderma
HP:0012472Eclabion
HP:0000656Ectropion
HP:0001019Erythroderma
HP:0010829Impaired temperature sensition
HP:0001036Parakeratosis
Occasional (29-5%)
HP:0001596Alopecia
HP:0000966Hypohidrosis
HP:0002828Multiple joint contractures
HP:0008404Nail dystrophy
HP:0000972Palmoplantar hyperkeratosis
HP:0008070Sparse hair
Excluded (0%)
HP:0025524Palmoplantar scaling skin

Run the differential on the 4 obligate / very frequent terms

Annotation source: 10232404[PMID]_19434086[PMID]_22739337[PMID]_30693114[PMID]_28403434[PMID]

7

Sources for this card