In plain language
ADHD can affect how a person directs attention, holds information in mind, starts and sequences tasks, regulates impulses, estimates time, and responds to reward or urgency. The pattern must be persistent, impairing, and understood in context.
Core symptom groups
Three presentations, many real-life patterns.
Inattention
Difficulty sustaining attention, organizing, remembering, following through, or managing details.
Hyperactivity
Visible movement or a more internal sense of restlessness, excess energy, or difficulty slowing down.
Impulsivity
Acting, speaking, deciding, spending, or shifting attention before there is enough pause.
Executive impact
Time, working memory, initiation, planning, emotional regulation, and consistency may all be affected.
Diagnosis
A pattern—not one bad week.
Diagnosis considers whether symptoms began in childhood, persist over time, appear in more than one setting, and create meaningful impairment. It also asks whether another condition better explains the difficulty.
Treatment
Support can be multimodal.
Depending on age and individual needs, care may include medication, behavioral interventions, therapy, parent support, school or workplace accommodations, environmental changes, and treatment of co-occurring conditions.