What is ADHD?
5 min read · Last reviewed Wed Jul 08 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
What ADHD actually is
ADHD (Attention Deficit Hyperactivity Disorder) is a neurodevelopmental condition that affects how the brain manages attention, impulse control, and activity levels. It isn't caused by bad parenting, too much sugar, or too much screen time — it's a difference in brain development that's present from early childhood, even if it isn't recognised until later.
Most children with ADHD aren't lacking attention altogether — they often struggle to direct attention where it's needed, while finding it very easy to focus intensely on things they find interesting. This is part of why ADHD can look inconsistent: razor-sharp focus during a favourite game, but unable to sit through ten minutes of homework.
The three presentations
Clinicians generally describe three presentations of ADHD:
- Predominantly inattentive — difficulty sustaining attention, forgetfulness, losing things, seeming "not to listen." Often under-recognised, especially in girls, because there's no hyperactivity to draw attention to it.
- Predominantly hyperactive-impulsive — restlessness, fidgeting, interrupting, difficulty waiting turns, acting before thinking.
- Combined presentation — features of both, and the most commonly diagnosed type in children.
What it looks like day to day
- Starting tasks enthusiastically but losing momentum partway through
- Losing belongings (coats, water bottles, homework) repeatedly
- Talking over others or blurting out answers
- Big emotional reactions to small frustrations
- Brilliant ideas and creativity alongside real struggles with follow-through
None of these are character flaws — they're consistent with how ADHD affects executive function, the brain's "management system" for planning, organising, and self-control.
ADHD and the rest of the family
ADHD has a strong genetic component. It's common for a parent to recognise some of their own childhood (or even current) experience in their child's diagnosis. This isn't a coincidence, and it can be useful context when deciding what support works for your family.
When to talk to your clinician
Consider bringing it up with your GP, paediatrician, or school SENCO if:
- Attention or activity-level differences are noticeably affecting school, friendships, or family life
- A teacher has independently raised similar concerns
- Your child seems distressed by repeatedly "getting in trouble" for things that feel outside their control
A diagnosis isn't required to start using supportive strategies at home, but it does open the door to formal support at school and, where appropriate, treatment options.