raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:254492

Frontal fibrosing alopecia

Synonyms: FFA

Type
Disease
Group
Disorder
Age of onset
Adult
Status
active

Frontal fibrosing alopecia (FFA) is a rare variant of lichen planopilaris characterized by symmetrical, progressive, band-like anterior hair loss of the scalp.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enFrontal fibrosing alopeciaFFA
frAlopécie frontale fibrosante= en
deAlopezie, fibrosierende frontale= en
esAlopecia frontal fibrosante= en
itAlopecia fibrosante frontale= en
nlFrontale fibroserende alopecie= en
ptAlopecia fibrosante frontal= en
plŁysienie czołowe włókniejące= en
csFrontální fibrotizující alopecie= en
ukФронтальна фіброзна алопеція= en
zh前额纤维性脱发= en
trFrontal fibrozan alopesi= en

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
ICD-10L66.1NTBTattributedvalidated
ICD-11EA91.2NTBTindexvalidated
MONDO0016776Evalidated
UMLSC4255374Evalidated
GARD10886Evalidated

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 (2):

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.

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Sources for this card