Is autism hereditary, and is autism in children?

**。Kanner first proposed the diagnosis of autism in 1943, and also proposed that autism is caused by the emotional apathy of parents and the excessive formalization of parenting, after decades of extensive research, it has now been confirmed that autism has nothing to do with parenting style, and the so-called indifference and formalization of autism by some parents with autism actually indicate that parents may have mild similar disorders. Although the current autism is still unknown, relevant scholars have carried out extensive research on autism, and more and more evidence shows that biological factors (mainly genetic factors) and fetal intrauterine environmental factors play an important role in the onset of autism, which has become a hot spot in the current research.

Other factors include immune factors, nutritional factors, etc., and based on relevant research, it is currently believed that autism is a neurodevelopmental disorder caused by external environmental factors (infection, intrauterine or perinatal injury, etc.) acting on individuals with genetic predisposition to autism.

Genetic factors In 1991, Folstein and Piven reported that the prevalence of autism was 82% in monozygotic twins and 10% in dizygotic twins. Epidemiological surveys have also confirmed that the prevalence of autism is 3%, which is much higher than that of the general population, and there is a phenomenon of familial clustering. Even if there are no same patients in the family, similar cognitive deficits such as language retardation, mental retardation, learning disabilities, mental disorders, and significant introversion can be found, suggesting that there is a genetic basis for the onset of autism.

Further studies have found that symptoms of genetic disorders such as fragile X syndrome, tuberous sclerosis, phenylketonuria, and rett syndrome are associated with autism. However, most children with autism do not have the above-mentioned genetic diseases, so a large number of relevant studies in recent years have focused on finding other chromosomal and genetic abnormalities, and abnormalities in the long arm of chromosome 15, chromosome X, and chromosome 7 from the mother are thought to be related to autism, among which the long arm of chromosome 15 is thought to be related to dyslexia, and dyslexia is also one of the manifestations of autism, so it has been paid attention to. Using molecular biology techniques, some so-called candidate genes that may be associated with autism have also been discovered, such as serotonin transporter gene and c-harvey-ras oncogene.

It is important to note that the results of studies on chromosomal and genetic abnormalities in children with autism are inconsistent. Most scholars believe that autism is probably not a monogenic inherited disease, and polygenic inheritance is more likely.

How is autism diagnosed before the age of 2?

It's autism. Children often have stereotypical behaviors, such as doing things or playing with toys in the same way, asking objects to be placed in a fixed position, going out on the same route, and eating only a few kinds of food for a long time.

Stereotyped repetitive movements and bizarre behaviors, such as repetitive jumping, staring with your hands in front of your eyes, fluttering, or walking on your toes, are common.

A few points of consensus on autism**:1. There is no specific drug for autism**. Early diagnosis and early intervention can improve the prognosis of autism, so autism** is generally considered to be the younger the age, the better the effect, but there is no age cut-off point, in fact, some patients improve at a later age.

2. Countries around the world, especially developed countries, have established many special education and training curriculum systems for autism, and the above main training methods have their own advantages and disadvantages, and there is no evidence that one is significantly better than the other. There is a tendency for various approaches to converge with each other.

Autism in children may be caused by genetics, generally with a certain tendency to family aggregation, and may also have abnormal brain structure or function. If you are pregnant, if you are pregnant, or if you have threatened miscarriage or viral infections during pregnancy, you may also increase the risk of autism. Autism usually has social communication difficulties or communication difficulties, and can also cause stereotyped behaviors, which are likely to have a certain impact on the patient's language development if there is no timely intervention.