What the diagnosis actually describes.
The CDC describes ADHD as one of the most common neurodevelopmental disorders of childhood. It is usually first identified in childhood and often lasts into adulthood. It involves trouble paying attention, trouble holding back impulsive behavior, being overly active, or some mix of those.
It is not one uniform thing. Clinicians describe three presentations — predominantly inattentive, predominantly hyperactive-impulsive, and combined — depending on which symptoms are strongest at diagnosis. Because symptoms shift over time, the presentation someone fits can shift too.
What people tend to notice day to day.
Everyone loses their keys and drifts off mid-sentence. What separates ADHD is that the pattern persists, can be severe, and causes real trouble at school, work, home, or with friends. The list below reflects what the CDC reports people commonly experience — a starting point for a conversation, not a self-test.
In adults the picture often looks different than the classroom stereotype. Hyperactivity may fade or turn inward as extreme restlessness, and symptoms can get harder to manage as adult demands pile up. Some adults have had ADHD their whole lives without anyone naming it.
- Losing hold of attention on tasks, or missing details and making careless errors.
- Starting instructions and getting sidetracked before the work is done.
- Trouble with organizing, sequencing, and keeping track of belongings.
- Steering away from work that demands sustained mental effort.
- Fidgeting, an internal motor that will not idle, or talking more than the moment calls for.
- Answering before the question lands, or struggling to wait for a turn.
The causes are unsettled, and other things imitate it.
The honest answer on cause is that no one knows. The CDC states plainly that the causes of ADHD are unknown, while pointing to risk factors researchers have identified: genes appear to play an important role, along with environmental exposures such as lead, alcohol and tobacco use during pregnancy, and health conditions including head injuries. Be skeptical of anyone, including a website, who tells you they know why you have it.
The bigger practical problem is imitation. There is no single test for ADHD, and sleep disorders, anxiety, depression, ordinary stress, and certain learning disabilities can all produce symptoms that resemble it. NIMH notes that other physical conditions and illnesses can do the same. A person who sleeps badly and a person with ADHD can look alike from the outside and need entirely different help.
How a qualified evaluator sorts it out.
Diagnosis is a multi-step process, and it belongs to a qualified evaluator: the CDC notes it can be made by a mental health professional such as a psychologist or psychiatrist, or by a primary care provider such as a pediatrician. Providers work from criteria published in the American Psychiatric Association's Diagnostic and Statistical Manual, fifth edition (DSM-5). Only trained healthcare providers can diagnose or treat ADHD.
Those criteria are specific. They call for six or more symptoms of inattention or hyperactivity-impulsivity for children up to age 16, and five or more from age 17 up; symptoms must have run at least six months, be out of step with the person's developmental level, and several must have appeared before age 12. Evaluation gathers behavior across settings, uses rating scales, and includes an exam to rule out other explanations. For adults, that means reconstructing childhood history alongside current symptoms.
Expect co-occurring conditions to come up. ADHD frequently arrives with anxiety, depression, autism spectrum disorder, disruptive behavior disorders, tic disorders, or substance use disorders, and the American Academy of Pediatrics recommends screening every child with ADHD for other disorders and concerns. Where medication is part of the picture, NIMH is clear that stimulants must be prescribed and monitored by a healthcare provider. Those decisions sit with your prescribing clinician, and nothing here is a reason to change them.
If the harder feelings show up, get support now.
Depression and anxiety travel with ADHD often enough that it is worth naming. If you or someone you love is in emotional distress, thinking about suicide, or struggling with alcohol or drug use, the 988 Suicide & Crisis Lifeline answers by call, text, or chat, around the clock, free and confidentially. Reach it at 988.
For a life-threatening emergency, dial 911. Neither situation should wait on an office appointment or a form.
Questions worth raising when you call us.
Gates Brain Health describes itself as a functional neurology practice in Reno, and Dr. Randall Gates, D.C., DACNB, sees people of a range of ages who come in with attention and focus concerns. He is a board-certified chiropractic neurologist, not a medical doctor. This practice does not diagnose or treat ADHD, and care here is complementary to — never a replacement for — the provider who handles your diagnosis and any medication.
A free consultation is the usual first step, and its purpose is deciding whether this is a sensible fit before anything is scheduled. Questions worth bringing: Have I been evaluated against DSM-5 criteria by someone qualified to do it? Have sleep, anxiety, and mood been considered as explanations in their own right? What would you examine, and what would you not be able to tell me? Who stays in charge of my medication decisions?
To ask, call (775) 507-2000, Monday through Friday, 8:00 AM to 5:00 PM. Please save medical details for the phone rather than sending them through the website.