Exfoliative ichthyosis

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Exfoliative ichthyosis

ORPHA:289586Disease

Also called Autosomal recessive exfoliative ichthyosis · Ichthyosis exfoliativa

What it is

Exfoliative ichthyosis is an inherited, non-syndromic, congenital ichthyosis disorder characterized by the infancy-onset of palmoplantar peeling of the skin (aggravated by exposure to water and by occlusion) associated with dry, scaly skin over most of the body. Pruritus and hypohidrosis may also be associated. Well-demarcated areas of denuded skin appear in moist and traumatized regions and skin biopsies reveal reduced cell-cell adhesion in the basal and suprabasal layers, prominent intercellular edema, numerous aggregates of keratin filaments in basal keratinocytes, attenuated cornified cell envelopes, and epidermal barrier impairment.

Key facts

Age of onset
Infancy, Neonatal
Inheritance
Autosomal recessive
Classified as
Disease

Recorded for the broader condition

Prevalence
1-9 / 1 000 000 (Europe)Autosomal recessive congenital ichthyosis

Orphanet records these for the broader condition rather than for this specific form. They are a starting point, not a figure for this subtype — subtypes often differ, and some are defined by being rarer than the condition they sit under.

Genes

CSTADisease-causing germline mutation(s) (loss of function)
SERPINB8Disease-causing germline mutation(s) (loss of function)

ICD-10 codes

Q80.8filed under a broader ICD-10 category — shared with 15 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

MESH C563978MONDO 0017339OMIM 607936OMIM 617115UMLS C1838440

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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