Attention deficit hyperactivity disorder (ADHD) is often diagnosed by a doctor using established guidelines after consideration of long-term symptoms of inattention, hyperactivity, and impulsiveness. Be prepared to answer questions about such symptoms. A medical examination probably will be required to eliminate other possible causes of symptoms.
Specific symptoms of inattention are:
- Dose not pay attention to detail
- Has difficulty sustaining attention at school
- Dose not seem to listen when spoken to
- Does not follow through on instructions or finish task
- Has difficulty organizing task
- Avoids, dislikes, or is reluctant to engage in tasks that requires sustained mental effort
- Often losses things
- Is easily distracted
- Is forgetful
- Often fidgets with hands or feet or squirms
- Often leaves seat in class room or elsewhere
- Often runs about or climbs excessively
- Has difficulty playing quietly
- Often on the g, acting as if driven by motor
- Often talks excessively
- Often blurts out answers before question are completed
- Often has difficulty awaiting turn
- Often interrupts and intrudes on others
Most cases are diagnosed by a pediatrician, but there’s no single test for the disorder. The diagnosis is made after a complete physical exam, an extensive medical history, and a long talk with your doctor about what you’ve been noticing at home. And that’s not all. Next, your doctor will talk to your child’s teachers (and a school psychologist, if there is one) and ask them to make observations and fill out questionnaires and rating scales. (Many teachers are achingly familiar with this drill.) That information gathering will help evaluate possible coexisting concerns, such as a learning disability, depression, or an anxiety disorder.
From The Smart Parent's Guide: Getting Your Kids Through Checkups, Illnesses, and Accidents by Jennifer Trachtenberg.

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The Smart Parent's Guide: Getting Your Kids Through Checkups, Illnesses, and Accidents
ADHD is diagnosed using diagnostic testing, like Vanderbilt scoring scales. Symptoms must be present by a certain age, exist in more than one setting, and affect quality of life. For instance, a child who fits criteria for ADHD at home, but not at school will not likely be diagnosed with ADHD. In addition, your pediatrician will want to rule out other medical reasons. Something as simple as poor sleep hygiene or poor sleep quality may masquerade as ADHD.
Learn how to identify ADHD in this video from Discovery Health.
Continue Learning about ADD/ADHD Diagnosis
Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.