Patient's question:
Sometimes, when seeing a child develop more slowly than their peers, it can be particularly urgent to ask: How are mentally retarded children formed?Doctor's answer:
Usually, intellectual disability is divided into two types: congenital factors and acquired factors. Congenital: refers to diseases that exist before birth. There are hereditary ones, as well as non-hereditary ones. Mainly include: 1. Chromosomal abnormalities, such as "Down syndrome"; 2. Hereditary metabolic defects, such as phenylketonuria; 3. Congenital malformations, such as microcephaly, hydrocephalus, etc.; 4. Intrauterine acquired, caused by the pregnant woman suffering from rubella during pregnancy, lack of trace elements, hypoxia, improper medication, exposure to X-ray irradiation, and the effects of toxic substances, etc. Acquired: refers to those caused during birth and after birth.