Symptoms of autism in three year old children

Mothers want to learn all the important information about the education of children and track their development, their awareness and their physical and mental development, from the identification of the symptoms of autism and how to detect it at an early age "at the age of three years or earlier".
This is illustrated in detail by my dear mother, Nour al-Din al-Subaie, pediatrician.
– What autism and its causes
Autism is a neurological disease caused by a dysfunction of the brain that affects its communication abilities with others. It is the doctors who are responsible for heredity, that is, a disease that occurs during the formation of chromosomes during pregnancy, and others believe that environmental symptoms, such as poisoning by heavy metals like mercury and lead, Types of vaccines given to children, cause of infection.
– Symptoms of autism in the child
Of course, each time the disease is detected early, treatment is easier and some symptoms appear in the child at an early age, during which parents can detect the disease before the age of three, including:
1 – do not answer the call on his behalf by those who surround him.
2. Do not show any natural reaction, such as the fear of hearing sudden sounds.
3 – tends to isolation and reluctance to play with other children.
4 – Repeat some of the words spoken and repeated without understanding.
5. Delay in pronunciation.
6 – the obvious association with some blood and the rejection of others.
7. Delay and learning difficulty compared to children of his age.
8 – lack of interest for those who talk with him, and refused to watch him.
9 – Repeat certain movements while sitting or playing, for example by playing with your fingers.
10 – Attracts strange things that are not usually attracted to children and looks at them for a long time, like watching the washing machine spinning.
It is very important for parents to know that it is not necessarily when one of these symptoms is that their son is autistic. Autism does not have a laboratory analysis done to detect it like other diseases, but it is determined by a set of tests and questions approved globally under the name of DSM4 ".