Facts to Know about Autism
Autism is a disabling situation linked to the mental development of the individual, caused by a neurological disorder that influences brain activity. It usually manifests itself in the first three years of life. It usually concerns 1.7% of people, and this figure is quadrupled if we talk about boys instead of girls; there is no racial, social class or ethnic distinction.
The most conservative estimations indicate that there are nowadays about 1.5 million people in the USA diagnosed with autism. This incidence ranks it as the third most common developmental disorder, even higher than Down Syndrome.
There is no single form of autism. Therefore, we talk about Autism Spectrum Disorder (ASD) to encompass various characteristics, symptoms and current levels. In fact, it can be said that each person has their own type of autism, because although there may be a certain pattern of behavior, in each person the symptoms manifest in different ways and with different severity, and even the evolution is different for some people to others.
Autism spectrum disorders often cause serious social, communication, and behavioral problems. People who suffer from it, in a less seriously way, can speak and educate themselves, but they may have difficulties in certain basic tasks and behaviors, such as:
- Express emotions. This causes them to be impassive or withdrawn.
- Empathize with the feelings of others. As a result, they may ignore or misinterpret how a person is feeling at particular times or situations.
- Understand social communication. They may not understand the body language or gestures of the person with whom you interact; Thus, they can do things like ignore the signs that someone is bored or angry.
- Management of information from the senses. Noises, excessive brightness, or crowds of people can disturb them.
- Adaptation to new habits. Change their seat to another place, have their teacher changed, etc. are some examples of everyday changes that can be difficult for them.
As a rule, the manifestations of this disorder begin to appear around the age of two. However, as we said before, this varies from person to person. Thus, there are children who have characteristics in their childhood, such as poor eye contact, lack of reaction when called by name or impassivity towards caregivers. While, on the other hand, others develop and act normally during the first months or years of life until they suddenly become more introverted or aggressive, or lose language skills.
In terms of characteristics and symptoms, some children have learning difficulties or have lower-than-normal intelligence traits. Others have normal to high intelligence and are fast learners, but have difficulty communicating and adapting to social situations, interacting with others, and applying their knowledge and skills in everyday life.
All these differences, combinations of symptoms, extension, moments in which it manifests itself, etc. They make each case unique, making it difficult to determine its severity. Generally speaking, it depends on how poor the child’s mental development is and how it affects their ability to act normally.
Here are some common signs in children under the age of two:
- Before 12 months: Reduced eye contact. Does not react to the possibility of being picked up. He is not interested in games where there is interaction, no matter how simple.
- 12 months: Does not babble and does not use gestures to communicate, such as pointing or saying goodbye.
- 12-18 months: does not react by name. He does not look where others are pointing. It does not indicate to ask for things. It doesn’t show things. Has an unusual response to certain auditory stimuli.
- 18 months: Does not use simple words.
- 18 to 24 months: Shows delay in the use of the language. He does not imitate, neither when gesturing, nor when carrying out actions. Perform repetitive movements like opening and closing doors. Its game mode lacks functionality or icons. He is not interested in communicating with other children.
- 24 months: Does not pronounce sentences of two or more words naturally.
Today, the origin or cause of autism is considered the product of various factors, which means that it is caused by a combination of many different elements (environmental, biological, genetic).
Several published studies on the effect of this or that gene in autism have shown that genes carry a lot of weight when this condition occurs. About 25% of the cases diagnosed with autism are believed to be purely genetic conditions and are directly related to some type of mutation or a specific gene. However, we still do not know the reason for these mutations or modifications in genetic information.
In order to achieve a better understanding of the genetics of autism, studies have been carried out in families with multiple affected individuals, in identical twins with the disease and, in particular, it was observed that it affects more men than women. All of these factors bring genetic factors into the spotlight as possible culprits.
But we shouldn’t be blinded by excitement every time new genetics news comes out, as an autism-related genetic defect has been found on nearly every chromosome, which is not surprising given that nearly 50% of our genes are involved in the functioning and development of our brain. In other words, of the 35,000 to 50,000 genes that each of us possess, 20,000 are responsible for the maturation and progress of the brain.
Immune system deficiencies or autoimmune diseases have also been linked to the onset of autism, however, no studies have been able to confirm this link. On the contrary, rates of autoimmune diseases were observed in children with autism similar to those of normal children, both in autoimmune diseases that affect the central nervous system and in those that affect other types of system.