raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:79502

Punctate palmoplantar keratoderma type 2

Synonyms: PPKP2 · PPPP · Porokeratosis punctata palmaris et plantaris · Punctate palmoplantar hyperkeratosis type 2

Type
Disease
Group
Disorder
Inheritance
Autosomal dominant
Age of onset
Adult
Status
active

Punctate palmoplantar keratoderma type 2 is a type of isolated, punctate, hereditary palmoplantar keratoderma characterized by multiple, asymptomatic, 1 to 2 mm-long, firm, hyperkeratotic projections ('spiny keratosis') on the palms, soles and digits (typically confined to their volar and/or lateral aspects). Histopathologically, compact columnar parakeratosis over hypo- or agranular epidermis is observed.

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Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enPunctate palmoplantar keratoderma type 2PPKP2 · PPPP · Porokeratosis punctata palmaris et plantaris · Punctate palmoplantar hyperkeratosis type 2
frKératodermie palmoplantaire ponctuée type 2Hyperkératose palmoplantaire ponctuée type 2 · KPPP2 · PPKP2 · PPPP · Porokeratosis punctata palmaris et plantaris
dePalmoplantarkeratose, punktierte, Typ 2Hypokeratose, palmoplantare punktierte, Typ 2 · PPKP2 · PPPP · Porokeratosis punctata palmaris et plantaris
esQueratodermia palmoplantar punctata tipo 2Hiperqueratosis palmoplantar punctata tipo 2 · PPKP2 · PPPP · Poroqueratosis punctata palmar y plantar · Poroqueratosis punctata palmaris y plantaris
itCheratoderma palmoplantare puntato tipo 2Ipercheratosi palmoplantare puntata, tipo 2 · PPKP2 · PPPP · Porocheratosi puntata palmare e plantare
nlKeratoderma palmoplantaris punctata type 2PPKP2 · PPPP · Porokeratosis punctata palmaris et plantaris · Puntvormige hyperkeratose van handpalm of voetzool type 2 · Puntvormige palmoplantaire hyperkeratose type 2 · Puntvormige palmoplantaire keratodermie type 2
ptQueratodermia palmoplantar punctiforme tipo 2Hiperqueratose palmoplantar punctiforme tipo 2 · PPKP2 · PPPP · Poroqueratose punctiforme palmar e plantar
plPunktowy rogowiec dłoniowo-podeszwowy typu 2PPKP2 · PPPP · Punktowa hiperkeratoza dłoni i stóp typu 2 · Punktowe rogowacenie dłoniowo-podeszwowe typu 2
csKeratoderma palmoplantaris punctata, typ 2PPKP2 · PPPP · Tečkovaná palmoplantární hyperkeratóza
ukТочкова долонно-підошовна кератодермія, тип 2Порокератоз долонної та підошовної частини пальців · PPKP2 · PPPP · Точковий долонно-підошовний гіперкератоз 2 типу
zh点状掌跖角皮病2型点状掌跖角皮病2型
trPunktat palmoplantar keratoderma tip 2PPPP · PPKP2 · Punktata palmoplantar hiperkeratoz tip 2

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM175860Evalidated
ICD-10Q82.8NTBTattributedvalidated
ICD-11EC20.32NTBTindexvalidated
MONDO0008292Evalidated
MeSHC536338Evalidated
UMLSC1867982Evalidated
GARD4439Evalidated

E exact · NTBT this ORPHAcode is narrower than the target · BTNT broader than the target · ND not decided.

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Classification

Preferential parent (Orphanet linearisation):

Parents in the classifications (1):

No children.

Codes that Orphanet moved or referred to this one:

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Genes

0 direct

Orphanet records no gene directly on this code.

5

Prevalence and incidence

2 records
TypeClassValueAreaQualificationValidationSource
Cases/families13 casesWorldwideCase(s)Validated2525006[PMID]
Point prevalence<1 / 1 000 000—WorldwideClass onlyValidatedORPHANET_2525006[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.

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HPO phenotypes

Orphanet has no HPO annotation for this code in this release.

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Sources for this card