What causes autism?

1. Genetic factors: From the research of family and twin children, it is found that about 10% to 20% of autistic twin brothers and sisters may have a slight autism tendency.

2. Infected by diseases: During pregnancy, women may suffer from German measles or rubella, which may damage the brain development of the fetus and lead to autism. In addition, metabolic diseases may also cause dysfunction of brain cells and affect the function of transmitting information to brain nerves, thus causing autism.

During pregnancy, infant brain hypoplasia, premature delivery, dystocia, neonatal brain injury, and brain injury caused by diseases such as encephalitis and meningitis in infancy may increase the chance of autism.

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Extended data:

Autism general communication disorder:

1, non-verbal communication disorder

Children with this disease often cry or scream to express their discomfort or needs. Older children may hold an adult's hand at what he wants, lack corresponding facial expressions, and their expressions often appear indifferent, and rarely use actions such as nodding, shaking their heads and waving their hands to express their wishes.

2. Speech communication disorder

Children with this disease have obvious obstacles in speech communication, including:

① The language comprehension ability is impaired to varying degrees;

(2) speech development is slow or underdeveloped, and some children have expressive speech before the age of 2-3, but it gradually decreases or even disappears completely;

③ Abnormal speech form and content: children often imitate speech, repeat speech rigidly, make mistakes in grammatical structure and personal pronouns, and have abnormal intonation, speech speed, rhythm and stress.

4 Impaired speech ability: Although some children can recite children's songs and advertisements, they rarely communicate in words, and they will not bring up topics, maintain topics or speak only with stereotyped and repetitive phrases, and they are entangled in the same topic.

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