Types
There are many types of Ichthyosis and an exact diagnosis may be difficult. Types of Ichthyosis are classified by their appearance and their genetic cause. Ichthyosis caused by the same gene can vary considerably in severity and symptoms. Some Ichthyoses don't appear to fit exactly into any one type. Also different genes can produce Ichthyoses with similar symptoms. Of note, X-linked Ichthyosis is associated with Kallmann syndrome (close to KAL1 gene). The most common or well-known types are as follows:
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