ADHD is a neurodevelopment disorder that is categorized by three different types: Inattention, Hyperactivity, and Combined. The disorder is generally associated with how certain neurotransmitters interact with each other; especially dopamine and norepinephrine. According to the Cleveland Clinic, “the difference causes changes in two different attentional networks of the brain — the default network, associated with automatic attention and the task positive network, associated with directed or effortful attention.”
Inattentive
- having a short attention span and being easily distracted
- making careless mistakes – for example, in schoolwork
- appearing forgetful or losing things
- being unable to stick to tasks that are tedious or time-consuming
- appearing to be unable to listen to or carry out instructions
- constantly changing activity or task
- having difficulty organizing tasks
Hyperactivity
- being unable to sit still, especially in calm or quiet surroundings
- constantly fidgeting
- being unable to concentrate on tasks
- excessive physical movement
- excessive talking
- being unable to wait their turn
- acting without thinking
- interrupting conversations
- little or no sense of danger
Combined type will manifest with mix of both hyperactivity and inattentive symptoms. It is the most common form of ADHD.
Symptoms in Adults
- carelessness and lack of attention to detail
- continually starting new tasks before finishing old ones
- poor organizational skills
- inability to focus or prioritize
- continually losing or misplacing things
- forgetfulness
- blurting out responses and often interrupting others
- mood swings, irritability and a quick temper
- extreme impatience
ADHD Basics 