Pigmentation defects-palmoplantar…

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Pigmentation defects-palmoplantar keratoderma-skin carcinoma syndrome

ORPHA:447961Disease

What it is

A rare genetic skin disease characterized by infantile onset of diffuse alopecia, abnormal skin pigmentation (hypo- and hyperpigmented macules of the trunk and face and areas of reticular hypo- and hyperpigmentation of the extremities), palmoplantar keratoderma, and nail dystrophy. Patients develop recurrent spinocellular carcinomas later in life. Brittle teeth resulting in early loss of dentition have also been described.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Infancy
Inheritance
Autosomal recessive
Classified as
Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Gene

SASH1Disease-causing germline mutation(s)

ICD-10 codes

D04.8filed under a broader ICD-10 category

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

MONDO 0018657OMIM 618373UMLS C5681108

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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