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How are ADHD and Tourette's syndrome alike?

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Signs of both conditions tend to show up around the same age. Symptoms of ADHD can start to appear between ages 3 and 6. Most kids are diagnosed during elementary school. On average, Tourette's syndrome begins around 7 years old.

Some children have both conditions. More than 60% of those with Tourette's syndrome also have ADHD. They also may have related conditions, like obsessive-compulsive disorder (OCD), learning disorders, and depression.

Researchers have found that there may be a genetic link between Tourette's syndrome and disorders like ADHD and obessive-compulsive disorder (OCD). They have a similar biology that makes them more likely to happen together.

HealthyChildren.org: "Tics, Tourette Syndrome, and OCD."

National Institute of Neurological Disorders and Stroke: "Tourette Syndrome Fact Sheet."

National Resource Center on ADHD: "ADHD and Tics or Tourette Syndrome."

National Institute of Mental Health: "Attention Deficit Hyperactivity Disorder."

Mayo Clinic: "Tourette syndrome," "Attention-deficit/hyperactivity disorder (ADHD) in children."

CDC: "Tourette Syndrome: Other Concerns & Conditions," "Facts About ADHD," "Facts About Tourette Syndrome."

JAMA Psychiatry: "Lifetime Prevalence, Age of Risk, and Genetic Relationships of Comorbid Psychiatric Disorders in Tourette Syndrome."

CHADD: "Managing Medication."

Reviewed by Smitha Bhandari on April 14, 2019

HealthyChildren.org: "Tics, Tourette Syndrome, and OCD."

National Institute of Neurological Disorders and Stroke: "Tourette Syndrome Fact Sheet."

National Resource Center on ADHD: "ADHD and Tics or Tourette Syndrome."

National Institute of Mental Health: "Attention Deficit Hyperactivity Disorder."

Mayo Clinic: "Tourette syndrome," "Attention-deficit/hyperactivity disorder (ADHD) in children."

CDC: "Tourette Syndrome: Other Concerns & Conditions," "Facts About ADHD," "Facts About Tourette Syndrome."

JAMA Psychiatry: "Lifetime Prevalence, Age of Risk, and Genetic Relationships of Comorbid Psychiatric Disorders in Tourette Syndrome."

CHADD: "Managing Medication."

Reviewed by Smitha Bhandari on April 14, 2019

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How does Tourette's syndrome differ from ADHD?

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