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A congenital skin disease characterized by dryness and scales, especially on the extensor surfaces of the extremities.



fish skin disease, xeroderma, a skin disease characterized by sharply increased keratogenesis and retarded keratolysis.

Incidence of ichthyosis is a familial condition in half the cases and hereditary in 25 percent. It appears in early childhood (most often around age three), intensifies at puberty, and lasts throughout life. It is expressed in dryness of the skin and the accumulation of horny masses on the skin’s surface, in the form of scales or of massive horny plates that resemble fish scales. The excretion of oil and perspiration decreases sharply. The affection spreads over the entire skin surface, except at joint folds, axillae, and inguinal folds. On the face and scalp, ichthyosis appears in the form of furfuraceous desquamation. The condition of the skin improves in the summertime as a result of increased excretion of oil and sweat. Ichthyosis is treated with hot baths containing soda or table salt, followed by lubrication of the skin with emollient creams. Cod-liver oil and vitamins may be taken internally (in particular vitamin A). In the summer, prolonged sojourns in the south can be helpful (sea bathing).


References in periodicals archive ?
Colloidion baby is one of the variety of icthyosis and is inherited as autosomal recessive manner.
Most colloidion babies do have a form of icthyosis and majority of them develop features of lamellar icthyosis, bullous icthyosis, X-linked icthyosis, netherton's syndrome or Goucher's disease.
Data on skin discolouration and icthyosis attributed to clofazimine were not collected here.
Xerosis (53%), facial puffiness (33%), icthyosis (14%), hair changes (26%) were the main cutaneous manifestations.
Itching in HIV infected persons can be due to infectious causes (Dermatophytes, Parasites, bacterial folliculitis) or non-infectious causes (Xerosis, Icthyosis, exaggerated Insect bites, eosinophilic folliculitis etc).
13)ACQUIRED ICTHYOSIS: 7 cases of acquired icthyosis were detected in this study.