White matter dysplasia is not the same as mental retardation, but may cause mental retardation. The white matter of the brain is the part of the brain where nerve fibers are gathered, and if there is a lesion, it can lead to multifunctional disorders. White matter dysplasia may cause mental retardation, as well as speech delays, physical movement disorders, and visual and hearing impairments. Most cases of leukoencephalic dysplasia are due to genetic mutations, chromosomal abnormalities and other congenital factors. White matter dysplasia can be treated with medications such as cytarabine to promote brain cell development. It is recommended that the patient should seek medical advice in a timely manner to find the cause of the disease under the guidance of the doctor and actively treat it. If white matter dysplasia is caused by other diseases, it is recommended to actively treat the original disease.