Attention deficit hyperactivity disorder (ADHD) is a chronic neurodevelopmental condition that causes differences in the  brain growth, development, and function. Related to attention, aggressive, behavior, and activity levels, including impulsivity and hyperactivity.

ADHD can  cause delayed maturation and activity differences in certain parts  of the brain . The differences of the ADHD brain can affect thinking, behavior, and emotional stability of an individual. 

The three main characteristics symptoms of ADHD includes  inattention, hyperactivity and a impulsive behavior . 

Inattentive Symptoms

• Fails to give close attention to details or makes careless mistakes in schoolwork or while studying. 
• Has difficulty in keeping attention during tasks or play
• Does not really seem to listen when spoken to directly
• Does not follow  on instructions and fails to finish schoolwork or chores and tasks
• Has major problems in organizing tasks and activities
• Mostly Avoids or dislikes tasks that require sustained mental effort 
• Often loses toys, pencils, books, or tools needed for tasks or activities
• Gets easily distracted
• Often forgetful in daily activities

Hyperactivity Symptoms

• Fidgets with hands or feet 
• Leaves seat when being seated is expected
• Runs about  in inappropriate situations
• Has major problem in playing or working quietly
• Is often “on the go,” acts as if “driven by a motor”
• Talks  excessively sometimes 

Impulsivity Symptoms

• Blurts out answers before questions have been completed by someone
• Has difficulty awaiting turn and are mostly aggressive to others
• Mostly Interrupts or intrudes on others

 All of these impact a person behaviour, action,  mood , and thinking Ability . That’s why ADHD meets the criteria for mental illness.

Doctors often diagnose ADHD in children who demonstrate these psychological differences and common symptoms. ADHD is a curable condition, and sometimes it’s symptoms ease with age. Treating ADHD at very small age often helps improve quality of life and academic performance.

There are differences between the brain developmental, structural, and functional of people who have ADHD and people without ADHD. These differences relate to brain size, the neurotransmitters, and brain cells networking. 

These differences are the basis to understanding and treating some of the common  symptoms and behavior patterns of ADHD patients. 

People with ADHD  have certain areas of the brain that mature more slowly or have different activity levels than a normal functional brain. And many of these brain differences  changes as a child matures and grows older and these maturation and proliferation process varies by the child’s developmental stage.

 According to previous research, the process includes:

The careful growth, positioning, and organization of neurons which is the brain’s cellular communication system into working brain networks

Also  the development of myelin around neurons, which provide efficient medium of neuronal transmission

The pruning, and the re-organization, of unnecessary or inefficient neuronal circuits

ADHD affects brain functioning in several ways. The condition has links to many cognitive abnormalities, behavioral, and motivational functioning. ADHD can affect the regulation of moods, emotions, and brain cell connections of an individual. It can also affect communication between different areas of the brain To the rest of the body parts. 

Brain networks are made up of groups of nerve cells, called neurons, which send information throughout the brain. The brain networks of people with ADHD may take more time to develop and generate messages and be less effective at relaying certain messages, behaviors, or processing information. These brain networks may function differently in areas such as focus, movement, and normal functioning of the body.