ADHD myths & misunderstandings
Some ADHD myths sound plausible because they contain a grain of truth. The useful question is usually not “true or false?” but “what does the evidence actually support?”
Doing well at school, being able to focus on interesting things, or not being visibly hyperactive does not by itself rule ADHD in or out.
Common claims, explained
“If you can focus sometimes, you cannot have ADHD.”
ADHD does not mean an absolute inability to focus. Attention can vary with interest, novelty, urgency, structure and environment. Diagnosis looks at the broader persistent pattern and functional impact.
“Only children have ADHD.”
ADHD begins in childhood, but symptoms and impairment can continue into adulthood. Adult assessment therefore asks about both current functioning and developmental history.
“Good grades rule out ADHD.”
Academic achievement alone does not determine whether ADHD is present. Some people compensate through high effort, structure, interest or support while experiencing substantial difficulties elsewhere.
“An online screening score is a diagnosis.”
Screeners can identify people who may benefit from further assessment. They do not replace a comprehensive clinical assessment.
“Only psychiatrists can diagnose ADHD.”
NICE states that diagnosis should be made by a specialist psychiatrist, paediatrician or another appropriately qualified healthcare professional with training and expertise in diagnosing ADHD.
A better way to judge information
Look for content that distinguishes professional qualification from ADHD-specific expertise, cites primary or national guidance, says when information was last reviewed, and is willing to acknowledge uncertainty.
See how ADHD Explained selects sources →