Nervous System Disorder
Attention Deficit Hyperactivity Disorder Attention Deficit Hyper Activity Disorder, also known as ADHD, is a neurological disorder which effects anyone from children to adults. The common symptoms of ADHD include impaired or diminished attention, impulsivity and hyper activity. These symptoms can range in each individual from being mild to severe. People who have ADHD usually will range from normal to above average intelligence, the disorder does not affect one's intelligence but rather their attention and impulse control. Other symptoms which can be included in ADHD include impairment in perception, inability to form concepts, language, memory and motor skills. They usually have a decreased attention span, increased impulsivity, and sometimes emotional liability. The condition is found to be ten times more prevalent in males than females. There are also other factors which can impact ADHD such as; genetic factors, biochemical irregularities, prenatal and postnatal injury or disease. Though there is no known cure therapy and medication can help persons with ADHD cope with their symptoms. ADHD has both environmental and genetic factors which can affect it. Researchers have found in recent studies that ADHD is polygenic, meaning that the disorder has multiple genes which can affect the severity of the symptoms. There is not much which you can test to find ADHD, so there are no brain scans or blood tests which can tell you if you have ADHD. However, they have found that the prefrontal cortex, caulclate nucleus and globus pallidus are usually smaller in individuals which have ADHD than those who do not. This anatomical discovery suggests that there is a lack of connectivity between key portions of the brain which control attention, stimulus processing and impulsivity. Along with this the neurotransmitters dopamine and norepinephrine are shown to have a part in pathophysiology of ADHD. The neurotransmitter