Of course, all children (especially younger ones) act this way at times, particularly when they're anxious or excited. But the difference with ADHD is that symptoms are present over a longer period of time and occur in different settings. They impair a child's ability to function socially, academically, and at home.

The good news is, with proper treatment, children with ADHD can learn to successfully live with and manage their symptoms.

What Are the Symptoms?

ADHD used to be known as attention deficit disorder, or ADD. In 1994, it was renamed ADHD and broken down into three subtypes, each with its own pattern of behaviors:

1. an inattentive type, with signs that include:

• inability to pay attention to details or a tendency to make careless errors in schoolwork or other activities
• difficulty with sustained attention in tasks or play activities
• apparent listening problems
• difficulty following instructions
• problems with organization
• avoidance or dislike of tasks that require mental effort
• tendency to lose things like toys, notebooks, or homework
• distractibility
• forgetfulness in daily activities

2. a hyperactive-impulsive type, with signs that include:

• fidgeting or squirming
• difficulty remaining seated
• excessive running or climbing
• difficulty playing quietly
• always seeming to be "on the go"
• excessive talking
• blurting out answers before hearing the full question
• difficulty waiting for a turn or in line
• problems with interrupting or intruding

3. a combined type, which involves a combination of the other two types and is the most common

Although it can often be challenging to raise kids with ADHD, it's important to remember they aren't "bad," "acting out," or being difficult on purpose. And children who are diagnosed with ADHD have difficulty controlling their behavior without medication or behavioral therapy.

How Is It Diagnosed?

 In most cases ADHD are treated by primary care doctors. Because there's no test that can determine the presence of ADHD, a diagnosis depends on a complete evaluation. When the diagnosis is in doubt, or if there are other concerns, such as Tourette syndrome, a learning disability, or depression, a child may be referred to a neurologist, psychologist, or psychiatrist. Ultimately, though, the primary care doctor gathers the information, makes the diagnosis, and starts treatment.

To be considered for a diagnosis of ADHD:

• a child must display behaviors from one of the three subtypes before age 7
• these behaviors must be more severe than in other kids the same age
• the behaviors must last for at least 6 months

the behaviors must occur in and negatively affect at least two areas of a child's life (such as school, home, day-care settings, or friendships).