hi mercy thanks for query yes it is genetic disorder.. physician often can diagnose ichthyosis by looking at the skin. A family history is very useful. In some cases, a skin biopsy is done to help to confirm the diagnosis. In a biopsy, a small piece of skin is removed and examined under a microscope. In some instances, genetic testing may be helpful in making a diagnosis. Diabetes has not been linked to acquired ichthyosis or ichthyosis vulgaris.[6] Ichthyosis is not more or less common in any ethnic group. As of now, there is no way to prevent ichthyosis since it is often of a genetic nature as homeopathic doctor i can say homeopathy have better cure and only you have go for the right physician who considers all your mental and physical symptoms