Key points
- Diagnosing ADHD is a process with several steps.
- If you think your child might have ADHD, the first step is to talk with a healthcare provider.

How is ADHD diagnosed?
Deciding if a child has ADHD is a process with several steps. There is no single test to diagnose ADHD, and many other problems, such as sleep disorders, anxiety, depression, and certain types of learning disabilities, can also have symptoms similar to ADHD.
Diagnosing ADHD in children
Diagnosing ADHD involves several steps. One step of the process involves having a medical exam, including hearing and vision tests, to rule out other problems with symptoms like ADHD. Your child's healthcare provider might recommend screening tests or other next steps based on your child's family health history.
An ADHD diagnosis can be made by a mental health professional, like a psychologist or psychiatrist, or a primary care provider, like a pediatrician. You can also contact a local early intervention program for a free or low-cost evaluation (children under age 3) or school system for a free evaluation (children 3 years or older). A doctor's referral is not needed for connecting with an early intervention program.
For children, the American Academy of Pediatrics (AAP) recommends that healthcare providers ask parents, teachers, and other adults who care for the child about the child's behavior in different settings, including at home, school, or with peers. The healthcare provider will look to determine whether the child has another condition or conditions that might explain the symptoms better, or that can often occur at the same time as ADHD.
Act Early!
Acting early when there's a concern can have a significant impact on a child's ability to learn new skills and overcome challenges and can increase success in school and life.
CDC's "Learn the Signs. Act Early." program free, family-friendly, high-quality, and research-based resources to engage families and providers in monitoring children’s developmental milestones from ages 2 months through 5 years. These resources can help families learn the signs of child development and encourage them to act early and get help for their child when they have questions or concerns.

- Children and Adults with ADHD (CHADD). Overview for Adults - CHADD. Available at: https://chadd.org/for-adults/overview/. Accessed on August 4, 2025.
- National Institute of Mental Health (NIMH). ADHD in Adults: 4 Things to Know. Available at: https://www.nimh.nih.gov/health/publications/adhd-what-you-need-to-know#pub1. Accessed on August 4, 2025.
- Inattention: Not being able to carefully complete a task, pay attention, think about, listen to, or watch someone or something.
- Hyperactivity: Having an unusually high level of activity or excitement.
- Impulsivity: Acting on sudden desires, ideas, or feelings rather than from careful thought.
- Wolraich ML, Hagan JF Jr, Allan C, Chan E, Davison D, Earls M, Evans SW, Flinn SK, Froehlich T, Frost J, Holbrook JR, Lehmann CU, Lessin HR, Okechukwu K, Pierce KL, Winner JD, Zurhellen W; SUBCOMMITTEE ON CHILDREN AND ADOLESCENTS WITH ATTENTION-DEFICIT/HYPERACTIVE DISORDER. Clinical Practice Guideline for the Diagnosis, Evaluation, and Treatment of Attention-Deficit/Hyperactivity Disorder in Children and Adolescents. Pediatrics. 2019 Oct;144(4):e20192528. Erratum in: Pediatrics. 2020 Mar;145(3).
