raremaprare-disease reference indexOrphadata 2026-06-23 · HPO 2026-09-01
ORPHA:2337

Diffuse palmoplantar keratoderma, Bothnian type

Synonyms: Diffuse palmoplantar keratoderma, Bothnia type · NEPPK, Bothnia type · NEPPK, Bothnian type

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

A rare isolated diffuse palmoplantar keratoderma characterized by diffuse, homogeneous, mild to thick, brown-to-yellowish palmoplantar hyperkeratosis (sometimes spreading over the dorsal aspect of fingers). Skin biopsy shows non-epidermolytic changes. There are no changes in hair, teeth or nails, and no syndromic involvement of other organs.

1

Names in Orphadata languages

12 of 12 languages
LangNameSynonyms
enDiffuse palmoplantar keratoderma, Bothnian typeDiffuse palmoplantar keratoderma, Bothnia type · NEPPK, Bothnia type · NEPPK, Bothnian type
frKératodermie palmoplantaire diffuse type BotnienKPP non épidermolytique type Botnien
deDiffuse Palmoplantarkeratose vom Bottnischen TypDiffuse Palmoplantarkeratodermie, Bottnischer Typ · Keratosis palmoplantaris Typ Bottnien · NEPPK Typ Bottnien · Palmoplantarkeratose, aquagene diffuse, durch AQP5-Genmutation
esQueratodermia palmoplantar difusa tipo BotniaNEPPK tipo Botnia
itCheratoderma palmoplantare diffuso tipo botnianoCheratoderma palmoplantare diffuso tipo Botnia · NEPPK tipo Botnia · NEPPK tipo botniano
nlDiffuse palmoplantaire keratodermie, Botnisch typeDiffuse palmoplantaire keratodermie, Botnië-type · NEPPK, Botnisch type · NEPPK, Botnië-type
ptQueratodermia palmoplantar difusa, tipo BothnianaNEPPK, tipo Bothnia · NEPPK, tipo Bothniana · Queratodermia palmoplantar difusa, tipo Bothnia
plRogowiec dłoni i stóp odmiana nieepidermolitycznaNEPPK · Rozlany rogowiec dłoniowo-podeszwowy, typ botnicki · Autosomalny dominujący rozlany rogowiec dłoni i stóp, typ Norrbotten · Rozlany rogowiec dłoniowo-podeszwowy typu botnickiego
csNon-epidermolytická palmoplantární keratodermaNEPPK · Autozomálně dominantní difuzní palmoplantární keratoderma
ukДифузна долонно-підошовна кератодермія, тип БотніанаДифузна долонно-підошовна кератодермія, тип Ботніа · NEPPK, тип Ботнія · NEPPK, ботнійський тип
zh非表皮松解掌跖角化病常染色体显性遗传弥漫性掌跖角化病Norrbotten型
trEpidermolitik olmayan palmoplantar keratodermaNEPPK · Yaygın palmoplantar keratoderma, Bothnian tipi · Otozomal dominant Yaygın palmoplantar keratoderma, Norrbotten tipi

Definition in:

2

Cross-references

qualifier = Orphanet mapping relation
SourceCodeQualifierICD relationValidation
OMIM600231Evalidated
ICD-10Q82.8NTBTattributedvalidated
ICD-11EC20.30NTBTindexvalidated
MONDO0010849Evalidated
UMLSC1838359Evalidated
GARD1862Evalidated

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
AQP5Disease-causing germline mutation(s) (gain of function) inAssessedHGNC:638ENSG0000016179860044212q13.12aquaporin 523830519[PMID]
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Prevalence and incidence

1 record
TypeClassValueAreaQualificationValidationSource
Point prevalence1-9 / 100 0002.5 / 100 000EuropeValue and classNot 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

10 annotations · validated 2024-10-16
HPOTerm (as annotated by Orphanet)Diagnostic
Very frequent (99-80%)
HP:0007447Diffuse palmoplantar kyperkeratosis
HP:0000975Hyperhidrosis
Frequent (79-30%)
HP:0008066Abnormal blistering of the skin
HP:0032259Chronic tinea infection
HP:0010783Erythema
HP:0032541Knuckle pad
HP:0200034Papule
HP:0000989Pruritus
HP:0200042Skin ulcer
Occasional (29-5%)
HP:0001807Ridged nail

Run the differential on the 2 obligate / very frequent terms

Annotation source: 30144154[PMID]_27255181[PMID]_23867895[PMID]_35014096[PMID]_36553627[PMID]

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Sources for this card