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Did you know that approximately one-third of adults with ADHD also suffer from depression? Studies suggest that up to 70% of children with ADHD will experience depression at some point in their lives. Research has shown that individuals with both ADHD and depression are at a greater risk of substance abuse, poor academic or work performance, and social and relationship difficulties compared to those with only one of these conditions.

Depression And ADHD

If you’re struggling with the challenges of depression and ADHD, you’re not alone. With the right diagnosis and treatment, you can learn to manage your symptoms and improve your quality of life.

Depression and ADHD are distinct mental health conditions, but they overlap significantly. Many individuals with ADHD often experience depressive symptoms, which can be challenging to diagnose and manage. 

Depression is a mood disorder that affects an individual’s thoughts, feelings, and behavior. It is classified into different types, including major depressive disorder, persistent depressive disorder, bipolar disorder, and seasonal affective disorder. 

On the other hand, ADHD is a neurodevelopmental disorder characterized by inattention, impulsivity, and hyperactivity. It is categorized into three types, including inattentive type, hyperactive-impulsive type, and combined type.

The mechanism of depression and ADHD overlap is complex and not yet fully understood, but several theories and factors may explain the connection.

Underlying Mechanisms

Studies have found that there are shared underlying mechanisms that could contribute to the link between ADHD and depression. One theory suggests that both conditions involve dysregulation of neurotransmitters, particularly dopamine and serotonin, which play a key role in mood and behavior regulation [1,2]. This could explain why people with ADHD are more susceptible to depression, as they may have lower levels of these neurotransmitters than those without ADHD.

Another theory suggests that the link between ADHD and depression could be due to shared genetic factors. Some genes have been identified that are associated with both ADHD and depression, suggesting a possible genetic overlap between the two conditions [3].

Risk Factors

People with ADHD are more likely to experience social difficulties, such as peer rejection and social isolation [4]. This could lead to feelings of loneliness and low self-esteem, which in turn could increase the risk of depression.

Academic difficulties are also common in people with ADHD and could contribute to the development of depression [5]. Poor academic performance can lead to frustration, low self-esteem, and feelings of hopelessness, all of which are risk factors for depression.

Peer relationships and academic attainment have been found to play a role in the link between childhood ADHD and adolescent depression. A study found that children with ADHD who had poor peer relationships and academic attainment were at a higher risk of developing depression in adolescence [5]. This suggests that addressing these areas of difficulty could potentially reduce the risk of depression in individuals with ADHD.

Environmental Factors

Environmental factors such as stressful life events and trauma have also been identified as potential risk factors for both ADHD and depression [1]. For example, experiencing abuse or neglect in childhood has been found to increase the risk of both ADHD and depression in adulthood [3]. Additionally, people with ADHD may be more sensitive to stress and may have a harder time coping with stressors, which could contribute to the development of depression.

The exact mechanism that explains the link between ADHD and depression is not yet clear. However, researchers have proposed several hypotheses. One theory suggests that the neurotransmitters dopamine and norepinephrine, which are involved in ADHD, may also be linked to depression. Individuals with ADHD have lower levels of these neurotransmitters, which may cause depressive symptoms [3].

Another hypothesis is that the symptoms of ADHD, such as difficulty concentrating and impulsivity, can lead to poor social functioning and academic underachievement. This, in turn, may result in low self-esteem, social isolation, and other risk factors for depression [5]. Additionally, studies suggest that genetic and environmental factors may also contribute to the link between ADHD and depression [4].

The combination of depression and ADHD can lead to more severe symptoms and greater difficulties in daily functioning. Here we will discuss common symptoms of co-occurring depression and ADHD.

Lack of motivation: One of the most prominent symptoms of co-occurring depression and ADHD is a lack of motivation. Individuals may feel like they cannot find the energy to complete tasks or focus on work or school assignments [1].

Poor concentration: Individuals with ADHD often struggle with concentration and focus, but depression can exacerbate these symptoms. Depression can make it difficult to concentrate on anything, leading to poor performance at work or school [6].

Difficulty sleeping: Depression can disrupt sleep patterns, leading to insomnia or excessive sleepiness. Sleep problems can make it even harder for individuals to focus and complete daily tasks [1].

Forgetfulness: ADHD can lead to forgetfulness and disorganization, and depression can make these symptoms worse. Individuals may forget important appointments, misplace belongings, or have trouble following through on commitments [2].

Feelings of sadness: Depression is characterized by feelings of sadness, hopelessness, and despair. Individuals with co-occurring depression and ADHD may feel overwhelmed by these emotions, leading to a lack of energy and motivation [6].

Impulsivity: Impulsivity is a hallmark symptom of ADHD, but depression can increase impulsive behaviors, such as overspending, overeating, or engaging in risky activities [6].

Physical symptoms: Depression can manifest in physical symptoms such as headaches, stomachaches, and muscle pain. These symptoms can further disrupt daily activities and increase stress and frustration [6].

Social withdrawal: Both depression and ADHD can lead to social withdrawal, but when they co-occur, individuals may struggle even more to maintain relationships with others. This can lead to feelings of loneliness and isolation [3].

It is important to note that these symptoms can vary from person to person and may not always be present in those with co-occurring depression and ADHD. It is important to seek the advice of a qualified mental health professional for an accurate diagnosis and appropriate treatment.

The link between ADHD and depression is well-researched, and there is a high rate of co-occurrence between these two disorders. However, the question of whether ADHD can directly cause depression is a complex one.

There is evidence to suggest that people with ADHD may be more susceptible to developing depression than the general population. This may be due to several factors, such as the challenges of living with ADHD, including difficulties with relationships, work, and education, which can lead to feelings of frustration and hopelessness [6]. In addition, the emotional dysregulation that is often associated with ADHD can make it harder for individuals to manage their moods, which may contribute to the development of depression [7].

However, it is important to note that not all people with ADHD will develop depression, and not all people with depression have ADHD [8]. It is also possible that the relationship between these two disorders is bidirectional, meaning that ADHD can increase the risk of developing depression, and depression can worsen the symptoms of ADHD [9].

It is worth noting that the exact relationship between ADHD and depression is still not fully understood, and further research is needed to clarify this issue. The link between these two disorders is likely complex and multifaceted, and individual factors such as genetics, environment, and life experiences may play a role [6].

Overall, while there is evidence to suggest that ADHD may increase the risk of developing depression, it is unlikely that ADHD directly causes depression. However, people with ADHD may be more vulnerable to the negative effects of stress and life events, which can increase the risk of developing depression [7].

ADHD and depression are two distinct mental health conditions that can co-occur. It is estimated that around 20-30% of individuals with ADHD also experience depression [6].

Getting a diagnosis for co-occurring depression and ADHD can be challenging, as the symptoms of these two disorders can overlap and create confusion. Here we’ll cover the diagnostic criteria for co-occurring depression and ADHD and the different methods used for diagnosis.

Diagnostic Criteria

According to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), a person must meet the diagnostic criteria for both ADHD and Major Depressive Disorder (MDD) to receive a co-occurring diagnosis [6]. The diagnostic criteria for ADHD include persistent inattention and/or hyperactivity-impulsivity that interferes with daily functioning. The diagnostic criteria for MDD include depressed mood or loss of interest or pleasure in almost all activities, along with other symptoms such as changes in appetite, sleep disturbances, fatigue, feelings of worthlessness, and suicidal thoughts.

It’s important to note that the diagnostic criteria for both ADHD and MDD can vary depending on age and developmental level [8]. For example, in children with ADHD, hyperactivity may be more prominent than inattention, while in adults, inattention may be more prominent than hyperactivity. Therefore, an accurate diagnosis requires a comprehensive evaluation of the individual’s symptoms.

Methods For Diagnosis

There are several methods for diagnosing co-occurring depression and ADHD. These include:

Clinical Interviews – Clinical interviews with a mental health professional can help to identify symptoms of both ADHD and depression. A clinician may ask questions about the individual’s medical and mental health history, as well as their current symptoms and how they impact their daily life [7].

Rating Scales – Rating scales are standardized questionnaires that can help to identify symptoms of ADHD and depression. These scales can be completed by the individual or by a caregiver, teacher, or partner [9]. Examples of rating scales for ADHD include the Adult ADHD Self-Report Scale (ASRS) and the Conners’ Adult ADHD Rating Scales (CAARS). Examples of rating scales for depression include the Beck Depression Inventory (BDI) and the Patient Health Questionnaire (PHQ-9).

Neuropsychological Testing – Neuropsychological testing can help to identify cognitive deficits that may be associated with ADHD, such as problems with attention, memory, and executive functioning. These tests can also identify emotional and behavioral difficulties related to depression [10].

Medical Evaluation – A medical evaluation can help to rule out other medical conditions that may be causing symptoms of ADHD or depression. For example, an individual may have a thyroid disorder or a vitamin deficiency that is contributing to their symptoms.

Co-occurring depression and ADHD can be challenging to treat, as the symptoms of these disorders can exacerbate each other. However, with the right treatment plan, individuals can learn to manage their symptoms and improve their overall quality of life. Here we’ll cover the different treatment options for co-occurring depression and ADHD.

Medication Therapy

Medication is a common treatment option for co-occurring depression and ADHD. The medications used to treat ADHD, such as stimulants and non-stimulants, can also help to alleviate symptoms of depression [6]. However, it’s important to note that some antidepressant medications can worsen symptoms of ADHD, so a careful evaluation of the individual’s symptoms is necessary before prescribing medication [12].


Psychotherapy, such as cognitive-behavioral therapy (CBT) and interpersonal therapy (IPT), can help individuals with co-occurring depression and ADHD to learn coping strategies and improve their problem-solving skills [8]. CBT can help individuals to identify negative patterns of thinking and behavior, while IPT can help individuals to improve their relationships and communication skills.

Lifestyle Changes

Lifestyle changes, such as regular exercise, a healthy diet, and good sleep habits, can also help to alleviate symptoms of co-occurring depression and ADHD [7]. Exercise can help to improve mood and increase attention, while a healthy diet can provide the necessary nutrients for optimal brain function. Good sleep habits, such as a regular sleep schedule and a relaxing bedtime routine, can improve overall well-being and reduce symptoms of depression and ADHD.

Support Groups

Support groups, such as those offered by CHADD (Children and Adults with Attention-Deficit/Hyperactivity Disorder), can provide individuals with co-occurring depression and ADHD with a safe space to share their experiences and learn from others [10]. Support groups can also provide a sense of community and reduce feelings of isolation.

Co-occurring depression and ADHD can be a challenging combination to navigate, but there is hope. Individuals need to seek professional help if they suspect they may have both disorders. 

A thorough evaluation, including a comprehensive medical and mental health history and diagnostic testing, can help to identify the presence of both conditions. 

Treatment options for co-occurring depression and ADHD include medication, psychotherapy, lifestyle changes, and support groups. A personalized treatment plan is essential to address the unique needs of each individual. 

It’s important to remember that managing symptoms may take time and patience, but with the right treatment and support, individuals can learn to successfully manage both disorders and improve their overall quality of life

  1. The Link Between Depression and ADHD. WebMD.
  2. Is It ADHD, Depression, or Both? Additude – Inside The ADHD Mind.
  3. Adult ADHD and comorbid depression: A consensus-derived diagnostic algorithm for ADHD.
  4. ADHD Subtypes and Comorbid Anxiety, Depression, and Oppositional-Defiant Disorder: Differences in Sleep Problems. Journal of Pediatric Psychology.
  5. What explains the link between childhood ADHD and adolescent depression? Investigating the role of peer relationships and academic attainment. European child & adolescent psychiatry.
  6. ADHD and Depression: What’s the Link? Healthline.
  7. ADHD and Depression. Psycom.
  8. When Depression Co-occurs with ADHD.
  9. Why ADHD Makes You More Prone to Depression—And What to Do About It.
  10. Is there a link between ADHD and depression? Medical News Today.
  11. Do Attention Deficit Hyperactivity Disorder and Major Depression Share Familial Risk Factors?
  12. The Relationship Between ADHD and Depression. Very Well Mind.


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