ADHD or Attention-Defecit Hyperactivity Disorder is a disease not much different from ADD. It effects 3 to 5 percent of school children.
Diagnosing ADHD is hard to do because all children are hyperactive and inattentive sometimes. When doctors diagnose ADHD the child has to be younger than age 7 and show symptoms for at least six months. They also must act like having ADHD in at least two different environments such as at school and in their home.
There are three main symptoms for ADHD. These are:
- Inattention- has trouble keeping their mind on one thing
- hyperactivity- constant motion
- impulsiveness- act before thinking
These symptoms often cause other things to happen like doing bad in school but wanting to good and things like that. Sometimes they can even lead to emotional problems.
Although the exact cause is still unknown scientists believe that ADHD is caused by an abnormality in the brain. This effects the concentration parts of one brain. Other scientists also think that the disease is caused by genetics. Many studies are being done to test these theories.
Drugs are the most common thing taken to help ADHD patients although we do not have a cure. The drugs help ease the effects of the disease. The drugs taken are Ritalin, Dexedrine, and Cylert.
ADHD patients cause a lot of stress for people around them. For more on this read the section about this on the page about ADD.