Autism, also called autism spectrum disorder (ASD), is a complicated condition that includes problems with communication and behavior. It can involve a wide range of symptoms and skills. ASD can be a minor problem or a disability that needs full-time care in a special facility.
People with autism have trouble with communication. They have trouble understanding what other people think and feel. This makes it hard for them to express themselves, either with words or through gestures, facial expressions, and touch.
People with autism might have problems with learning. Their skills might develop unevenly. For example, they could have trouble communicating but be unusually good at art, music, math, or memory. Because of this, they might do especially well on tests of analysis or problem-solving.
More children are diagnosed with autism now than ever before. But the latest numbers could be higher because of changes in how it’s diagnosed, not because more children have a disorder.
Symptoms of autism usually appear before a child turns 3. Some people show signs from birth. Common symptoms of autism include:
Some children with autism may also have seizures. These might not start until adolescence.
Exactly why autism happens isn't clear. It could stem from problems in parts of your brain that interpret sensory input and process language.
Autism is four times more common in boys than in girls. It can happen in people of any race, ethnicity, or social background. Family income, lifestyle, or educational level doesn’t affect a child’s risk of autism.
Autism runs in families, so certain combinations of genes may increase a child’s risk.
A child with an older parent has a higher risk of autism.
If a pregnant woman is exposed to certain drugs or chemicals, like alcohol or anti-seizure medications, her child is more likely to be autistic. Other risk factors include maternal metabolic conditions such as diabetes and obesity. Research has also linked autism to untreated phenylketonuria (also called PKU, a metabolic disorder caused by the absence of an enzyme) and rubella (German measles).
There is no evidence that vaccinations cause autism.
It can be hard to get a definite diagnosis of autism. Your doctor will focus on behavior and development. For children, diagnosis usually takes two steps.
If you weren’t diagnosed with autism as a child but notice yourself showing signs or symptoms, talk to your doctor.
There’s no cure for autism. But early treatment can make a big difference in the development of a child with autism. If you think your child shows symptoms of ASD, tell your doctor as soon as possible.
What works for one person might not work for another. Your doctor should tailor treatment for you or your child. The two main types of treatments are:
Talk to your doctor before trying something different, like a special diet.