The symptoms of ADHD include inattention and/or hyperactivity and impulsivity. These are traits that most children display at some point or another. But to establish a diagnosis of ADHD, sometimes referred to as ADD, the symptoms should be inappropriate for the child's age.
ADHD is common in children and teens. Adults also can have ADHD. With ADHD in adults, there may be some variation in symptoms. For instance, an adult may experience restlessness instead of hyperactivity. In addition, adults with ADHD consistently have problems with interpersonal relationships and employment.
Types of ADHD
There are three different types of ADHD, including:
- combined ADHD (the most common type), which involves all of the symptoms
- inattentive ADHD (previously known as ADD), which is marked by impaired attention and concentration
- hyperactive-impulsive ADHD, which is marked by hyperactivity without inattentiveness
For a diagnosis of ADHD, some symptoms that cause impairment must be present before age seven. Also, some impairment from the symptoms must be present in more than one setting. For instance, the person may be impaired at home and school or home and work. Also, there must be clear evidence the symptoms interfere with the person's ability to function at home, in social environments, or in work environments.
Symptoms of ADHD
There are three different categories of ADHD symptoms: inattention, hyperactivity, impulsivity.
Inattention may not become apparent until a child enters the challenging environment of school. In adults, symptoms of inattention may manifest in work or in social situations.
A person with ADHD may have some or all of the following symptoms:
- difficulty paying attention to details and tendency to make careless mistakes in school or other activities; producing work that is often messy and careless
- easily distracted by irrelevant stimuli and frequently interrupting ongoing tasks to attend to trivial noises or events that are usually ignored by others
- inability to sustain attention on tasks or activities
- difficulty finishing schoolwork or paperwork or performing tasks that require concentration
- frequent shifts from one uncompleted activity to another
- disorganized work habits
- forgetfulness in daily activities (for example, missing appointments, forgetting to bring lunch)
- failure to complete tasks such as homework or chores
- frequent shifts in conversation, not listening to others, not keeping one's mind on conversations, and not following details or rules of activities in social situations
Hyperactivity symptoms may be apparent in very young preschoolers and are nearly always present before the age of seven. Symptoms include:
- fidgeting, squirming when seated
- getting up frequently to walk or run around
- running or climbing excessively when it's inappropriate (in teens this may appear as restlessness)
- having difficulty playing quietly or engaging in quiet leisure activities
- being always on the go
- often talking excessively
Hyperactivity may vary with age and developmental stage.
Toddlers and preschoolers with ADHD tend to be constantly in motion, jumping on furniture, and having difficulty participating in sedentary group activities. For instance, they may have trouble listening to a story.
School-age children display similar behavior but with less frequency. They are unable to remain seated, squirm a lot, fidget, or talk excessively.
In adolescents and adults, hyperactivity may manifest itself as feelings of restlessness and difficulty engaging in quiet sedentary activities.
Impulsivity symptoms include:
- difficulty delaying responses
- blurting out answers before questions have been completed
- difficulty awaiting one's turn
- frequently interrupting or intruding on others to the point of causing problems in social or work settings
- initiating conversations at inappropriate times
Impulsivity may lead to accidents such as knocking over objects or banging into people. Children with ADHD may also engage in potentially dangerous activities without considering the consequences. For instance, they may climb to precarious positions.
Many of these symptoms occur from time to time in normal youngsters. However, in children with ADHD they occur frequently -- at home and at school or when visiting with friends. They also interfere with the child's ability to function normally.
ADHD is diagnosed after children consistently display some or all of the above behaviors in at least two settings, such as at home and in school, for at least six months.
Long-Term Prognosis With ADHD
Some children with ADHD -- approximately 20% to 30% -- develop learning problems that may not improve with ADHD treatment. Hyperactive behavior can be associated with the development of other disruptive disorders, particularly conduct and oppositional-defiant disorder. Why this association exists is not known.
A great many children with ADHD ultimately adjust. Some, though, especially those with an associated conduct or oppositional-defiant disorder, are more likely to drop out of school. These individuals fare more poorly in their later careers than individuals who did not have ADHD do.
Inattention tends to persist through childhood and adolescence and on into adulthood. The symptoms of hyperactivity and impulsivity tend to diminish with age.
There are several warning signs for ADHD that seem to get worse when demands at school or home increase. They include:
- difficulties following instructions
- being unable to get organized, either at home or at school
- fidgeting, especially with the hands and feet
- talking too much
- failing to finish projects, including chores and homework
- not paying attention to and responding to details
- getting poor grades in school
- being isolated from peers due to poor grades and secondary depression
WebMD Medical Reference
Health Solutions From Our Sponsors
CDC: "Symptoms of ADHD."
American Psychiatric Association. The Diagnostic and Statistical Manual of Mental Disorders, 4th Ed. (DSM-IV). 1994.
Reviewed by Marina Katz, MD on February 21, 2011
© 2011 WebMD, LLC. All rights reserved.
Top ADHD in Children Related Articles
ADHD Symptoms in KidsWhat is ADHD (Attention Deficit Hyperactivity Disorder)? Learn to recognize ADHD symptoms in children.
ADHD & ParentingAttention Deficit Hyperactivity Disorder (ADHD) is a common disorder seen in children. Parents can learn tips and techniques to teach ADHD children life skills, coping mechanisms, and better ways to learn with ADHD.
Childhood ADHD QuizFind out causes, symptoms, and treatments for Attention Deficit Hyperactivity Disorder, a widespread behavioral condition commonly seen in children. Take the Childhood ADHD Quiz.
Antisocial Personality DisorderAntisocial personality disorder (ASPD) has many symptoms, signs, and causes. Therapy is one treatment option for antisocial personality disorder. It is closely related to other personality disorders (PD), such as borderline personality disorder and narcissistic personality disorder.
Bipolar disorder (or manic depression) is a mental illness characterized by depression, mania, and severe mood swings. Treatment may incorporate mood-stabilizer medications, antidepressants, and psychotherapy.
Brain Foods SlideshowLearn how to increase concentration and boost memory. Brain foods such as fish (omega 3 fatty acids), berries, fruits, nuts, chocolate, vitamins and more can help.
Children's HealthChildren's health is focused on the well-being of children from conception through adolescence. There are many aspects of children's health, including growth and development, illnesses, injuries, behavior, mental illness, family health, and community health.
DepressionDepression is an illness that involves the body, mood, and thoughts and affects the way a person eats and sleeps, the way one feels about oneself, and the way one thinks about things. The principal types of depression are major depression, dysthymia, and bipolar disease (also called manic-depressive disease).
Developmental ScreeningDevelopmental screening helps doctors and nurses to know if a child is learning basic skills at the right time or if the child might have a problem. Behavioral and developmental disabilities include autism, intellectual disability (also known as mental retardation), and attention deficit hyperactivity disorder (ADHD). Early intervention and detection of delays can help a child to reach his/her full potential.
Learning DisabilitiesLearning disabilities can cause an individual to have trouble learning and using skills such as reading, listening, writing, reading, speaking, reasoning, and performing mathematics. There is no cure for learning disabilities. Parents and teachers working together to properly diagnose learning disabilities can properly plan a course of education. For some, medication may be appropriate as complimentary treatment.
Concentration KillersLearn the truth about multitasking, email overload, nagging thoughts, hunger, and other brain drains of modern life. See what's destroying your focus and quick solutions to help concentration.
PsychotherapyPsychoteraphy is often the first form of treatment recommended for depression. Psychotherapy helps depression by helping people understand the behaviors, emotions and ideas that contribute to their depression, regain a sense of control and pleasure in life, and learn coping techniques as well as problem solving skills.
StressStress occurs when forces from the outside world impinge on the individual. Stress is a normal part of life. However, over-stress, can be harmful. There is now speculation, as well as some evidence, that points to the abnormal stress responses as being involved in causing various diseases or conditions.
SuicideSuicide is the process of intentionally ending one's own life. Approximately 1 million people worldwide commit suicide each year, and 10 million to 20 million attempt suicide annually.
Disease Prevention for TeensTeenagers recognize that they are developmentally between child and adult. Teen health prevention includes maintaining a healthy diet, exercising regularly, preventing injuries and screening annually for potential health conditions that could adversely affect teenage health.