A typical manifestation of pediatric ataxia capillaris syndrome is that the head turns faster than the eye movements when the patient looks at a fast-moving object. Ataxia capillary dilation syndrome is a group of autosomal recessive disorders with multisystem involvement, also known as LouisBar syndrome, what are the preventive methods for pediatric ataxia capillary dilation syndrome? 1, maternal health The occurrence of some immunodeficiency diseases is known to be closely related to embryonic dysplasia. If a pregnant woman is irradiated by radiation, treated with certain chemical drugs or has a viral infection (especially rubella virus infection), the immune system of the fetus can be damaged, especially in early pregnancy, which can cause the involvement of multiple systems including the immune system. Therefore, it is very important to strengthen maternal health care, especially in early pregnancy. Pregnant women should avoid receiving radiation, use some chemical drugs carefully, and take rubella vaccination to prevent viral infection as much as possible. Pregnant women should also strengthen nutrition and timely treatment of some chronic diseases. 2, genetic counseling and family investigation Although most diseases cannot be determined the mode of inheritance, genetic counseling is valuable for those diseases for which the mode of inheritance is determined. If an adult has an inherited immunodeficiency disease will provide the developmental risk of their children; if a child has an autosomal recessive or sex-linked immunodeficiency disease, parents should be told how likely their next child is to have the disease. Immediate family members of patients with antibody or complement deficiencies should be tested for antibody and complement levels to determine the familial pattern of disease. For certain diseases for which genetic localization is available, such as chronic sarcoidosis, the patient’s parents, siblings and their children should be tested for localized genes, and if a patient is found, the same should be done in his or her family members, and the patient’s children should be carefully monitored for the occurrence of the disease from birth. 3, prenatal diagnosis Certain immunodeficiency diseases can be diagnosed prenatally, such as cultured amniotic fluid cell enzymology test can diagnose adenosine deaminase deficiency, nucleoside phosphorylase deficiency and certain combined immunodeficiency diseases; fetal blood cell immunology test can diagnose CGD, X-linked gammaglobulinemia, severe combined immunodeficiency diseases, so as to interrupt pregnancy and prevent the birth of affected children. Early and accurate diagnosis of ataxia capillaris syndrome, early and specific treatment and provision of genetic counseling (prenatal diagnosis and even intrauterine treatment) are very important.