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Writer's pictureKaitlyn Boudreault

What Is ADHD? Symptoms, Types, Causes, Diagnosis, and Treatments

Updated: 6 days ago


What Is ADHD?


Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental difference and a neurodivergent condition that affects how individuals interact with the world. 


People with ADHD may struggle with hyperactive, impulsive, or inattentive symptoms, which can interfere with your relationships, work, school, and other life activities. 


If you're experiencing these symptoms, you're not alone. Approximately, 366.33 million people globally, or about 5% of the population are estimated to have ADHD. Both children and adults can receive a diagnosis of ADHD, though it is more commonly identified in childhood. Many adults remain underdiagnosed until later in life.


Women, in particular, are often diagnosed later and may experience misdiagnosis or underdiagnosis during childhood. 


ADHD Symptoms


ADHD symptoms can vary and also depend on the specific subtype diagnosed. Common traits of ADHD include:


Many adults with ADHD may not even realize they have the condition until it begins to interfere with their daily lives. Common issues include missed deadlines, forgotten meetings, impatience while waiting in line, and mood swings.


If you recognize these traits in yourself, consider requesting an adult ADHD assessment from a Blue Sky Learning partner organization. 



Causes of ADHD


The exact causes of ADHD remain unclear, but research suggests genetics play a significant role. You may be at increased risk for ADHD if one or both of your parents have ADHD. 


Researchers are still investigating whether specific genes, including those related to the neurotransmitter dopamine, contribute to the develop of ADHD.


It's important to note that ADHD does not result from parenting styles, video games, sugar intake, or laziness.


The Three Types of ADHD


ADHD divides into three types, each characterized by different symptoms:


Hyperactive-Impulsive ADHD


Individuals with primarily hyperactive-impulsive ADHD exhibit hyperactive and impulsive symptoms as their main characteristics, with no inattentive symptoms. These symptoms may include:


  • Fidgets or tapping hands while seated

  • Inability to remain seated

  • Engaging in excessive moment

  • Difficulty playing quietly

  • Excessive talking

  • Blurting out answers before others finish speaking

  • Trouble waiting for their turn

  • Interrupting others


Inattentive Type ADHD


A common misconception about ADHD is that one must be hyperactive to have ADHD. In reality, primarily inattentive ADHDers display inattentive symptoms excessively, without impulsive or hyperactive behaviours. Your symptoms might include:


  • Making careless mistakes

  • Struggling to maintain sustained attention

  • Failing to listen when spoken to directly

  • Difficulty following instructions

  • Disorganization

  • Avoiding tasks that require prolonged mental effort

  • Frequently losing items

  • Becoming easily distracted

  • Experiencing forgetfulness


Primarily Combined-Type ADHD


Individuals with combined-type ADHD show a mix of inattentive, impulsive, and hyperactive symptoms . To qualify for a diagnosis of combined-type ADHD, you must meet criteria for both inattentive and hyperactive-impulsive types, which requires demonstrating five out of the 9 traits as an adult from each type.


How is ADHD Diagnosed?


ADHD does not have a single assessment or test. Professionals trained to evaluate ADHD, such as family doctors, nurse practitioners, psychiatrists, neurologists, or psychologists, can diagnosis this condition.


Your healthcare provider will assess your ADHD symptoms over six months and may also evaluate whether any of your symptoms could be attributed to another medical or psychiatric condition. 


For adults to receive an ADHD diagnosis, symptoms must have been present before the age of 12.  Therefore, boys are more frequently diagnosed with ADHD than girls, largely because teachers and other adults more commonly notice common ADHD symptoms in boys.


For those who go undiagnosed, untreated ADHD can negatively impact various aspects of your life, including relationships, work, and academic performance.


If you live in Canada, Blue Sky Learning offers a step-by-step guide for adults seeking an ADHD diagnosis.


ADHD Co-occurring Conditions and Identities


ADHD often co-occurs with other conditions; Approximately 60–70% of adults with ADHD have at least one comorbid condition. Common co-occurring conditions include:


  • Autism: Scientific literature suggest that ADHD and autism occur together, with co-occurrence rates around 50%-70%. This combination is often referred to as AuDHD.

  • Mood Disorders: Individuals with ADHD may also experience depressive episodes, bipolar disorder, and other mood-related conditions. The interplay between ADHD traits and mood disorders can lead to a cycle where mood challenges exacerbate ADHD and vice versa.

  • Anxiety Disorders: Anxiety is prevalent among individuals with ADHD. The persistent worry and nervousness can intensify ADHD traits, and ADHD symptoms can similarly worsen anxiety. 

  • Academic Learning Difficulties: Adults with ADHD often face learning challenges, scoring lower in academic tests compared to their peers and and encountering difficulties in the classroomAcademic coaching can provide support for these learning difficulties associated with ADHD.

  • Other Co-occurring Conditions: In addition to mood and anxiety disorders and learning difficulties, individuals with ADHD might also experience chronic pain disorders. 

  • Interestingly, those with ADHD are also more likely to identify as LGBTQ+ or neuroqueer.


ADHD Treatment


There is no one-size-fits-all treatment for ADHD. Each individual's treatment plan varies, with a multimodal approach typically proving most effective.


This approach may combine various strategies to alleviate ADHD symptoms, including: 


  • ADHD coaching

  • ADHD therapy

  • Medication

  • Exercise and nutrition


ADHD Coaching


ADHD coaching empowers individuals to take control of their lives, enhancing productivity across various areas—school, work, relationships, and beyond.


Coaching could occur virtually and focuses on personal growth, equipping clients with the tools they need for positive life changes. 


An ADHD coach guides you in recogning your strengths, building self-awareness and confidence, and developing strategies for success. 


ADHD Therapy 


ADHD therapy, also known as neurodivergent-affirming therapy, acknowledges and supports your ADHD or neurodivergent identity.


An ADHD therapist views neurodivergence as a valuable aspect of diversity and does not attempt to fix you or view ADHD as a flaw.


At the same time, they validate the challenges you face as an ADHDer and address how ableist societal systems can be disabling. 


Together, you will work on finding accommodations that support your disability.


Many ADHD coaches and therapists offer free consultations allowing you to determine whether their approach aligns with neurodivergent-affirming principles. 


ADHD Medications


Medications for ADHD may include both stimulants and non-stimulants. 


Stimulants increase the levels of chemicals like dopamine and norepinephrine in the brain. 


If stimulants are ineffective or cause adverse side effects, non-stimulants can serve as a alternative treatment option. 


To determine which medication is right for you, consult your healthcare provider to discuss the potential risks and benefits and make an informed decision.


Book a Free Consultation With Blue Sky Learning


Are you an ADHDer seeking an ADHD assessment from one of the Blue Sky Learning partner clinics?


Are you seeking ADHD coaching or ADHD therapy from an ADHD coach or ADHD therapist on the Blue Sky Learning team? 


Book a free 20-minute consultation with one of the Blue Sky Learning team members by emailing hello@blueskylearning.ca or go through the link below.



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