Not all patients with ichthyosis have to be in their 30s to start showing symptoms. Ichthyosis is caused by gene mutation, chromosome abnormality and other factors, each patient’s situation is different, so it leads to some patients in their 30s before they start to show symptoms. Ichthyosis is a hereditary keratinization disorder skin disease, with gene mutation, chromosome abnormality and other factors have a greater relationship, some systemic diseases or drug-induced ichthyosis is called acquired ichthyosis, usually later onset. Each patient’s physical condition is different, so some patients have ichthyosis attacks a few months after birth, and some patients start to have ichthyosis attacks in their thirties. Patients suffering from ichthyosis should choose the correct method of active treatment, do not delay the condition, can be treated with medication under the guidance of a doctor, such as topical vitamin A, urea cream and so on. Patients suffering from ichthyosis should choose the correct method to carry out treatment, usually pay attention to do a good job of skin moisturizing, pay attention to personal hygiene habits.