MAIN TYPES OF ADHD
There are three types of ADHD diagnosis, subject to the following core symptoms:
Even though this disorder is often diagnosed at an early age, it can also be found in adults and elders. The symptoms usually improve with age, but many adults who were diagnosed at a young age continue to experience difficulties.
SOME OF THE CAUSES OF ADHD
The exact cause of Inattention Deficit Hyperactivity Disorder (ADHD) is not fully understood, although a combination of factors such as genetics and heritability (found in 16% of cases) are thought to be responsible. Research shows that parents and siblings of a child with ADHD are more likely to have ADHD themselves.
Other studies suggest that people with ADHD show differences in certain brain areas, particularly the activity generated by neurotransmitters. Finally, some groups can be affected by environmental factors that put them at a risk for this disorder such as premature babies, born with brain damage, epilepsy, or due to consumption of alcohol or tobacco during pregnancy.