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:
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