In some people, the signs of ADHD seem obvious -- fidgeting constantly, difficulty paying attention in school or at work, and leaving tasks unfinished. For others, particularly those without behavior problems, ADHD may be more difficult to diagnose.
The symptoms of ADHD may mimic those of other conditions, and sometimes the signs are subtler and harder to distinguish. One psychiatrist, Daniel Amen, MD, believes that to get a truly accurate diagnosis of ADHD, it is necessary to look inside the...
These drugs improve ADHD symptoms in about 70% of adults and 70% to 80% of children. They tend to reduce interruptive behavior, fidgeting, and other hyperactive symptoms, as well as help a person finish tasks and improve his or her relationships.
Improvements in behavior and attention span usually continue as long as the medication is taken, although benefits in social adjustment and school performance have not yet been shown to endure over the long term.
Stimulants are not considered to be habit-forming in the doses used to treat ADHD in children and adolescents, and there is no evidence that their use leads to drug abuse. Nonetheless, there is a potential for abuse and addiction with any stimulant medication, especially if a person has a history of substance abuse and addiction.
Common Stimulants for ADHD
There are many stimulants available to treat ADHD: short acting (immediate-release), intermediate-acting, and long-acting forms. Common stimulants include:
The short-acting forms of the drug are usually taken two or three times a day and the long-acting ones just once a day.
Newer forms of some stimulant drugs may reduce side effects and relieve symptoms for a longer period of time. They include Concerta (10-12 hour duration), Daytrana patch (7- 10 hours, depending on how long it is worn), Ritalin LA (6-8 hours), Metadate CD (6-8 hours), and Adderall XR (10-12 hours).
How Do Stimulants Work for ADHD?
For someone with ADHD, stimulants regulate impulsive behavior and improve attention span and focus by increasing the levels of certain chemicals in the brain, such as dopamine and norepinephrine, which help transmit signals between nerves.
Who Should Not Take a Stimulant Drug?
People with any of the following conditions should not take stimulants:
Glaucoma (a condition that causes increased pressure in the eyes and can lead to blindness)
Severe anxiety, tension, agitation, or nervousness
Treatment with a type of medication called monoamine oxidase inhibitors, such as Nardil or Parnate, within 14 days of starting stimulant therapy
People with motor tics or a personal or family history of Tourette's Syndrome
People who are psychotic or have a history of psychosis
What Are the Side Effects of Stimulants?
Common side effects of stimulants include:
Increased blood pressure
These typically resolve after a few weeks of treatment as the body adjusts to the medication.