Ichthyosis is a dry skin condition. There are two general types:

Inherited ichthyosis (several forms exist)-dryness and scaling of the skin due to hereditary factors Acquired ichthyosis-thickening and scaling of the skin that is not inherited but is associated with certain medical disorders.

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Ichthyosis is a dry skin condition. There are two general types:

·    Inherited ichthyosis (several forms exist)-dryness and scaling of the skin due to hereditary factors

·    Acquired ichthyosis-thickening and scaling of the skin that is not inherited but is associated with certain medical disorders
Inherited ichthyosis is caused by a genetic defect that is passed from parent to child or that occurs spontaneously.

Acquired ichthyosis is relatively rare but may be caused by any of the following:

·    Leprosy (extremely rare in the US)
·    Hypothyroidism
·    Lymphoma ( Hodgkin's Lymphoma , Adult Non-Hodgkin's Lymphoma )
·    Sarcoidosis

A risk factor is something that increases your chance of getting a disease or condition. Risk factors for ichthyosis include:

·    Family member with ichthyosis
·    Cold weather
·    Frequent or prolonged bathing, especially in hot water
·    Harsh soaps or detergents
·    Soaps or lotions containing certain scents or perfumes

The doctor will ask about your symptoms and medical history, and perform a physical exam. The diagnosis of ichthyosis is usually based on signs and symptoms of the disorder. Rarely, blood tests or a skin biopsy may be required.