Ichthyosis hystrix, Curth-Macklin type (IHCM) Ichthyosis hystrix, Lambert type (IHL)
Description
Ichthyosis hystrix is a rare autosomal dominant skin disorder characterized by spiky, verrucous hyperkeratosis of palms and soles. Diagnosis is supported by specific ultrastructural abnormalities such as perinuclear tonofibril shells of keratin intermediate filaments in binucleated suprabasal keratinocytes. It has been postulated that mutations in KRT1 result in a phenotype with the presence of palmoplantar keratoderma, the Curth-Macklin type (IHCM), while mutations in KRT10 cause the Lambert type (IHL), in which palmoplantar keratoderma is absent.
Category
Congenital malformation
Brite
Human diseases in ICD-11 classification [BR:br08403]
14 Diseases of the skin
Genetic and developmental disorders affecting the skin
EC20 Genetic disorders of keratinisation
H00707 Ichthyosis hystrix
Pathway-based classification of diseases [BR:br08402]
Cellular process
nt06545 Cornified envelope formation
H00707 Ichthyosis hystrix