If you have spent your whole life feeling like you are working twice as hard for half the output, you are not lazy and you are not broken. You may be living with undiagnosed adult attention-deficit/hyperactivity disorder. In my Palm Beach concierge practice, the majority of adults I evaluate for adult ADHD treatment in Palm Beach describe the same constellation of traits — and most of them respond beautifully to a properly dosed amphetamine such as Vyvanse (lisdexamfetamine) or Adderall XR (mixed amphetamine salts).
This post walks through seven traits I see again and again in the adults who come to me for an ADHD evaluation, and explains how the two most prescribed long-acting amphetamines work, how they differ, and how I decide which one fits which patient.
7 traits of adults living with ADHD
ADHD in adults rarely looks like the bouncing-off-the-walls child in the textbook. It is quieter, more internal, and more disruptive to careers and relationships than most people realize. Here are the seven traits I screen for.
1. Trouble sustaining attention on routine, low-stimulation tasks
You can read a thriller for four hours straight, but a one-page contract makes your eyes glaze over by paragraph two. ADHD is not an inability to focus — it is an inability to regulate focus on demand.
2. Chronic distractibility
Every text, every email notification, every coworker walking by your office derails you. By 3 p.m. you have started fifteen things and finished one.
3. Task-initiation paralysis (the procrastination loop)
You know the project is due Friday. You think about it Monday, Tuesday, Wednesday. You start it Thursday at 11 p.m. The gap between knowing and doing is the hallmark of executive-function dysfunction.
4. Internal restlessness
Hyperactivity in adults is usually invisible. Patients describe a constant mental hum — bouncing knees in meetings, jumping from tab to tab, an inability to relax even on vacation.
5. Impulsivity in decisions, money, and conversations
Interrupting people. Online shopping at 2 a.m. Quitting jobs on a whim. Saying yes before you have thought it through. Impulsivity in adult ADHD shows up in the checkbook and in the marriage, not on the playground.
6. Time blindness
A 30-minute task takes three hours. You are chronically late, or chronically early because you over-corrected. Deadlines either do not feel real or they feel apocalyptic — there is no middle gear.
7. Emotional dysregulation and rejection sensitivity
This is the trait the DSM under-emphasizes and the one that ruins the most relationships. Small criticisms feel devastating. Frustration boils over. Many of my adult ADHD patients have been told for years they have anxiety or depression, when the underlying engine is dysregulated dopamine.
If three or more of these sound like a description of your life, you owe yourself a proper evaluation. Self-diagnosis from TikTok is not enough — and neither is a 15-minute med check from a stranger. Visit my ADHD treatment page for more on how I evaluate adults.
How amphetamines actually work in the ADHD brain
The ADHD brain is under-stimulated, not over-stimulated. It runs short on dopamine and norepinephrine in the prefrontal cortex — the executive-function part of the brain that handles attention, planning, and impulse control.
Amphetamines do two things stimulants like methylphenidate do not do as efficiently:
- They block reuptake of dopamine and norepinephrine.
- They actively push more dopamine and norepinephrine out of the neuron.
That dual action is why amphetamines are often the most effective class for adult ADHD. When the dose is right, patients describe it not as feeling “wired,” but as finally feeling quiet — the mental noise drops, the start-of-task paralysis lifts, and time becomes something they can feel again.
Vyvanse (lisdexamfetamine): the smooth, prodrug amphetamine
Vyvanse is lisdexamfetamine — a prodrug. That means the capsule is inactive until your body cleaves off a lysine amino acid in the bloodstream, slowly releasing dextroamphetamine over 10 to 14 hours.
What that means clinically:
- Slower onset — no jolt, no euphoric rush. Patients sensitive to “stimulant feel” tolerate it better.
- Smoother offset — less of the late-afternoon crash and rebound irritability.
- Lower abuse potential — because it must be metabolized to activate, crushing or snorting it does nothing. This is why Vyvanse is a Schedule II controlled substance with a meaningfully different risk profile than instant-release amphetamines.
- Once-daily dosing that genuinely lasts a full workday.
I tend to start Vyvanse in patients who are anxious about stimulants, who have a history of substance use (outpatient detox), or who need stable, all-day coverage for a demanding professional schedule.
Adderall XR (mixed amphetamine salts): the classic, reliable workhorse
Adderall XR is a 50/50 blend of dextroamphetamine and levoamphetamine salts in an extended-release capsule with two beads — one that releases immediately, one that releases about four hours later.
What that means clinically:
- Faster onset — patients usually feel it within 30 to 60 minutes, which some prefer for early-morning meetings.
- Two-pulse delivery — the second bead gives a midday lift many patients describe as helpful for the post-lunch slump.
- The levoamphetamine component — gives some patients better focus on emotional regulation and motivation than dextroamphetamine alone.
- Generic availability — usually less expensive than Vyvanse.
I lean toward Adderall XR in patients who have done well on it historically, who need a faster onset, or whose insurance makes Vyvanse cost-prohibitive.
How I prescribe in my Palm Beach practice
ADHD medication is not one-size-fits-all and it is never a five-minute conversation. As both a psychiatrist and a psychotherapist, I take a full history — medical, psychiatric, family, substance use — before I write a single prescription. I then start low, titrate slowly, and follow up frequently. Concierge means you have my cell, not a portal — so if a dose is too high, too low, or feels wrong, we adjust the same week, not in six.
Many of my adult ADHD patients also benefit from short-term psychotherapy alongside medication to rebuild the executive-function habits that years of untreated ADHD eroded. And for patients across Florida who cannot drive to Palm Beach, I see most ADHD follow-ups via telehealth.
Learn more about my approach and credentials or view all psychiatric services.
Frequently Asked Questions
Is Vyvanse stronger than Adderall XR?
Not exactly — they are different. Milligram for milligram they are not directly comparable because Vyvanse is a prodrug. A clinically equivalent dose of Vyvanse 70 mg is roughly comparable to Adderall XR 30 mg for many patients, though the feel is different: Vyvanse is smoother, Adderall XR comes on faster.
Can I start ADHD medication as an adult if I was never diagnosed as a child?
Yes. Adult-onset diagnosis is extremely common, especially in women and in high-IQ patients who compensated their way through school. A proper evaluation looks for symptoms that have been present since childhood, even if they were never named.
Are amphetamines safe long-term?
For most adults without uncontrolled cardiovascular disease, yes — when prescribed and monitored appropriately. I check vitals, screen for cardiac risk, and re-evaluate at every visit.
Will I have to take it forever?
Not necessarily. Some patients use medication for years; others use it for a defined season — a graduate program, a demanding job change — and taper off once they have rebuilt their executive-function scaffolding.
If the seven traits above describe your life and you are tired of white-knuckling your way through every workday, let’s have a real conversation about whether ADHD is the missing piece. Call 561-760-4107 or visit me at 44 Cocoanut Row, Suite M-202, Palm Beach, FL 33480.