Attention Deficit and Hyperactivity Disorder is biological in origin. It is caused by a dysfunction in the transmission of information to the brain which results in the disruption of the brain’s executive function. The symptoms can also be affected by the environmental factors and the sufferer’s own emotional health. Mood disorders such as anxiety and depression are common amongst people who have been diagnosed with ADHD. This is sometimes due to emotional frustrations caused by the symptoms. In children with ADHD, the most common coexisting conditions are behavioral disorders – oppositional defiant disorder and conduct disorder. In adults, it is depression and anxiety.
Adult ADHD was only recognized in the 1970s. Until then it was believed that the symptoms would clear as the child grew up. It is estimated that 4.4% of adults in the United States have ADHD. The presence of a coexisting condition will increase the impact of ADHD. As the child with ADHD grows, so does the probability of a coexisting condition appearing. By the time that he has reached adulthood, he will have up to 70% chance of suffering from a co-existing condition. As children grow into adults, there is often a reduction in observable symptoms.… Read the rest