It is a neurobehavioral condition that affects social and language skills with repetetive rigid behaviours , symptoms usually appear during the first 3 years of life

it is now called autism spectrum disorder because of the range of symptoms .

The cause of the disease is not yet known, there are research suggests that environmental and genetic factors have an important role.

Restrictive and repetitive behaviors include,:
1. Specific behaviors or having strange behavior repeated.
2. The interest in certain topics such as numbers.
3. Focusing on  objects.
- The behavior of communication and social interaction include:
1. Resentment to change in the routine .
2. avoiding eye contact .
3. Not participating in activities, and rarely enjoy activities.
4. not interested in talking to others or conversations..
5. Repeats the words or phrases he hear..
6. Having difficulty understanding the point of view of others and in understanding the actions of people.
7. sensetive to light, noise, .
 

- Psychological treatment with drugs such as antibiotics: Alresprdon and serotonin.
- Treatment of language and talk.
- Vitamins.

- Gender.
- Family history.
- Genetics.
- Old parents age