You may begin noticing signs of autism in your child as soon as after six months after birth. Signs of the presence of this disorder appear during infancy and it is usually diagnosed by the age of three years. It is important to wait until the child is three years old before making a conclusion as the child's development will usually appear to be normal until about two years have gone by. After about two and two and a half years, the symptoms will appear to regress quickly. They can appear at various levels ie they can begin gradually and pick up in pace thereafter or they can just appear in an exaggerated manner.
There are various characteristics that newborns will display including abnormal responses to stimuli. This means that their senses may appear to be interactive as compared to a normal child. At the same time, they may be very under-active as compared to a normal child. There are very basic and common exercises that can be analyzed. A child may appear to be experiencing pain when they are touched. such children will tend to alienate themselves from others.
Autistic children may also seem to experience overwhelmingly unpleasing smiles when they encounter a certain foul smell. Their behavior is described as unusual as that is not how a normal person would have behaved. Another unusual behavior would be in their response to the day to day noises that surround them. The autistic child can also begin to wail out loud should a sudden loud noise pass by eg that caused by a motorcycle.
Withdrawal behaviors in a child where they tend to be happier alone can also be a justified reason to suspect autistic characteristics in a child. They may display a lack of interest in toys, lack of response to others, a marked reduction or increase in activity level or an ultimate resistance to cuddling.
The development of a child's language is negatively affected by autism. Autistic children also have difficulty in communicating their needs. They may use gestures instead of words to convey messages and may laugh, cry or show distress rarely and for unknown reasons. They also develop an unclear and underdeveloped method of expressing their needs. They may at times make use of their incomplete speech which mostly does not make much sense. Some may experience echolalia which is a trait depicted by the repetition of many words in a sentence. These are all characteristics displayed by autistic children and it is important to understand them so that you can be able to tell whether a child is autistic or not.