What is the reason of congenital mental retardation?

summary

There are many reasons for mental retardation, in addition to congenital genetic factors, acquired social psychological and cultural factors are also an important part. Children have obvious mental retardation, most of them are easy to recognize in infancy, but mild mental retardation is often found after entering primary school. If it is found that the motor development is backward, the response to the outside world is slow, the language development is poor, the expression is dull or has a special face, it should go to the hospital for examination as soon as possible, so as to make early diagnosis and make corresponding treatment.

What is the reason of congenital mental retardation?

In order to improve the quality of the whole nation and achieve the goal of eugenics, China has explicitly prohibited the marriage of close relatives. Consanguineous marriage is not only one of the main factors leading to fetal malformation, disease and stillbirth, but also an important factor leading to children's mental retardation.

Severe malnutrition or illness of pregnant women, hypoglycemia, nuclear jaundice, sepsis. Maternal intrauterine and extrauterine compression, injury, ectopic placenta, injury during childbirth, asphyxia, intracranial hemorrhage, premature infants, and infant trauma, radiation injury can cause low intelligence.

Chromosomal abnormalities, such as congenital stupidity, account for 5-10% of mentally retarded children. Gene mutations such as congenital metabolic disorders belong to this category. Hereditary diseases: chromosomal aberration and gene mutation can be caused, the common ones are congenital folly syndrome, cat barking syndrome, congenital testicular hypoplasia, etc.

matters needing attention

During pregnancy, the fetus feels the external environment all the time. The bad living space, the terrible situation of war and the tense interpersonal relationship are extremely unfavorable to the fetus. The children born in this kind of environment often have poor psychological quality, weak adaptability, incomplete immune function and lower intelligence development than normal children.