Would it be more likely that your second child will have autism if your first child has it?

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Those who are looking for an answer to the question «Would it be more likely that your second child will have autism if your first child has it?» often ask the following questions:

❓ Will second child have autism?

The reasons that later-born children are at higher risk of autism or have more severe symptoms of the disorder are unclear. Autism is highly genetic, but the uneven risk among siblings suggests environmental or social factors are at play as well.

❓ Will my second child have autism?

The study found that children born within a year of an older sibling have a more than threefold higher risk of developing autism than those born at least three years apart3.

❓ How likely is it that my child will have autism?

Roughly 3 to 5% of children with an aunt or uncle with autism spectrum disorder (ASD) can also be expected to have ASD, compared to about 1.5% of children in the general population, according to a study funded by the National Institutes of Health.

10 other answers

Yes. However, it is more likely that the second child will not have an autism spectrum disorder than that the child will have one. There is a genetic component to autism spectrum disorders. The chance of having a second child with autism or Asperger's Syndrome is greater than the usual chance of having a child with an autism spectrum disorder. If the next child does have it, it could be a milder or more severe case than that of the first child. According to one study, if one child in the family has autism, the chance that another will also have autism is 10%. In that study, the chance that an identical twin has autism when the other does is 82%. Other studies give results ranging from a 5% chance of a second child with autism to a 15% chance. However, if there are two children in the family who have autism, the chance of a third child with autism increases greatly to about 30%. (One study indicates that the chance of a third child with autism is 50% if the child is male.)

Autism is a complex brain development disorder. that includes a number of genetic and environmental factors. When your first child is affected by autism. That may increase the chances of having a second child with autism spectrum disorder (ASD). Because they can carry a gene which causes autism in your child.

If a couple already has two or more children with an ASD, the chance of a subsequent child having an ASD may be as high as 32-35% (Ozonoff et al., 2011; Ritvo et al., 1989). Two other points related to recurrence rates are worth noting.

There is more than likely a genetic component to autism and you or your husband may have that gene(s), so no matter what you do, your children will be autistic. What you have to decide is if you can handle all the demands that comes with having a large family with autism.

I noticed just way too many children who also had siblings with an ASD to make that figure of 5% correspond to reality. And now, there’s a study just published in Pediatrics, confirming my observation: if a parent has a child with autism, the chance of a sibling also developing an ASD is almost 20%. That’s what the authors found in a large American sample, and I don’t see any reason why it would be different for other parts of the world.

In general, for any random couple, the chances of having a child with autism spectrum disorder (ASD) is approx. 1 in 68 or 1.5%. But the risk does go up dramatically to 20% for families who already have a child with ASD. If the family already has more than one child with ASD, the chances of another child having ASD increases to 30%.

Researchers interested in autism genetics have studied the unaffected parents and siblings from families with multiple children with autism. These family members are more likely to have conversational and social difficulties than. families who have just one child with ASD 11-13 or; families with typically-developing sons and daughters. 14,15

Researchers agree that couples with one autistic child do have an increased risk of having a second child with the disorder, though the exact level of risk is debatable. This means you'd need to feel comfortable with the possibility of raising multiple children with disabilities.

A new study in Pediatrics says the recurrence risk of autism in younger siblings is higher than previously thought. Hardly comforting to autism families who want a second or third child and not surprising to me, mom of three daughters with autism. In 1999, my husband and I were considering having a third child.

Even more sobering is that the chances of having a second child with autism are over 5%. While this is nothing to take lightly, still the chances of having a typical child are over 90%. This makes this a personal decision that will shape the rest of your life and your family’s life.

Your Answer

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Children born to older parents are at a higher risk for having autism. Parents who have a child with ASD have a 2 to 18 percent chance of having a second child who is also affected. Studies have shown that among identical twins, if one child has autism, the other will be affected about 36 to 95 percent of the time.

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These studies have found that 4-7% of families had more than one child with an ASD (Chakrabarti & Fombonne, 2001; Gronborg, Schendel, & Parner, 2013). The largest and most recent population-based study, which included over 1.5 million children born in Denmark between 1980 and 2004, found an overall recurrence risk of 7% (Gronborg et al., 2013).

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Are boys more likely to have autism?

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Are twins more likely to have autism?

Fraternal twins and non-twin siblings share 50% of their genetic information. Despite this, it is still more likely that if one fraternal twin has autism, the other will also develop it than in non-twin siblings.

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Who is more likely to have autism?

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How likely am i to have a second autistic child?

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How likely are you to have a second autistic child?

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How likely is it to have a second autistic child?

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