Understanding The ADHD And Schizophrenia Comorbidity

Medically reviewed by April Justice, LICSW and Majesty Purvis, LCMHC
Updated October 23, 2024by BetterHelp Editorial Team

Attention-deficit/hyperactivity disorder (ADHD) is commonly defined as a neurodevelopmental condition causing symptoms of hyperactivity, impulsivity, and inattention. Affecting millions of children and adults worldwide, this condition frequently co-occurs with other mental illnesses. Schizophrenia may occur in some individuals with ADHD. Understanding the connection between the two conditions can be a step toward finding effective treatment or symptom management options for both, including therapy with a licensed mental health professional. 

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Symptoms of attention-deficit/hyperactivity disorder (ADHD)

There are three subtypes of ADHD listed in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), including primarily inattentive (ADHD-PI), hyperactive-impulsive type (ADHD-HI), and combined type. Although used in previous editions of the DSM, attention deficit disorder (ADD) is no longer a clinical diagnosis and has been replaced with ADHD-PI.

Symptoms of inattention that may be present in individuals with ADHD-PI or the combined subtype for an ADHD diagnosis typically include the following: 

  • Forgetfulness 
  • Difficulty focusing on tasks for extended periods 
  • Difficulty following instructions
  • Lacking organization 
  • Losing items, such as keys or one’s wallet
  • Becoming distracted during conversations or activities 
  • Difficulty finishing tasks at work or school 
  • Forgetting appointments 

Symptoms of hyperactivity and impulsivity that may be present in individuals with ADHD-HI or the combined subtype include the following: 

  • Difficulty remaining still 
  • Interrupting others during a conversation 
  • Speaking too loudly or quickly 
  • Frequently jumping from one activity to the next 
  • Fidgeting 
  • Stimulus-seeking behavior 
  • Seeming to be “driven by a motor” or “on autopilot” 
  • Impulsivity 

Attention-deficit/hyperactivity disorder and neurodiversity

ADHD can be considered a form of neurodiversity, which generally means there is no “cure” for this condition, and it tends to be present for one’s entire life. Individuals who identify with the neurodiversity model may believe that some of the most difficult challenges of ADHD stem from living in a society that focuses on neurotypical needs. Positive aspects of ADHD can include creativity, passion for one’s interests, and increased sensory perception. 

Symptoms of schizophrenia

Schizophrenia is listed under the schizophrenia spectrum and related psychotic disorders category in the DSM-5 and may be associated with a subsequent psychotic disorder.

In general, for a diagnosis to be made and to investigate schizophrenia risk, an individual must have two or more of the following symptoms for at least one month: 

  • Delusions
  • Hallucinations 
  • Disorganized speech
  • Disorganized behavior or catatonia
  • Negative symptoms 
  • A lack of emotional expression 
  • Social dysfunction impacting at least one central area of functioning 

The symptoms must not be caused by substance use or another schizophrenic disorder like schizoaffective disorder. The DSM-5 notes that schizophrenia can only be diagnosed alongside a neurodevelopmental disorder like ADHD or autism spectrum disorder (ASD) if prominent hallucinations or delusions are also present for at least a month.

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Are ADHD and schizophrenia connected? 

According to a 2016 study in the Journal of Psychiatry and Neuroscience, children and adolescents with ADHD and their family members may be more likely to be diagnosed with a psychotic disorder like schizophrenia. Because comorbidity can be a risk, the study authors recommend treating psychotic symptoms first, as these symptoms can exacerbate dysfunction related to ADHD.

What might explain why ADHD is commonly associated with schizophrenia?

According to a 2015 study, ADHD can increase one’s chances of substance use, which may further increase their risk of developing psychosis as a symptom of schizophrenia. Treating substance use challenges and working with individuals with ADHD to reduce risk-taking behavior can be one way to prevent the risk of severe symptoms. 

If you notice symptoms of both ADHD and schizophrenia in yourself or a dependent, you may benefit from seeking professional support. Symptoms of schizophrenia can become severe and potentially escalate to a crisis. ADHD symptoms, on top of schizophrenia symptoms, may cause higher levels of paranoia and more hyperactivity during psychosis.

If you are struggling with substance use, contact the SAMHSA National Helpline at (800) 662-4357 to receive support and resources.

If you are experiencing suicidal thoughts or urges during a crisis, call the 988 Suicide & Crisis Lifeline at 988 or text 988 to talk to a crisis provider over SMS. They are available 24/7 to offer support. 988 also offers an online chat for those with an internet connection.

Treatment for comorbid ADHD and schizophrenia

Several treatments and symptom management options may be beneficial for those living with both ADHD and schizophrenia spectrum disorders. Carefully monitoring psychiatric comorbidities and risk factors can reduce symptoms. Below are a few evidence-based options for symptom management.

Medication 

Medication tends to be more often recommended for treating schizophrenia than ADHD. However, psychiatric comorbidity often requires different types of medication to manage multiple symptoms. Stimulants are frequently prescribed for ADHD, which may worsen paranoia or hyperactivity in individuals with schizophrenia. Antipsychotic medications are usually prescribed for schizophrenia.

Maintain an open dialogue with your prescribing doctor when finding medications that work for both ADHD and schizophrenia. Consult a medical doctor before starting, changing, or stopping a medication for any condition. The information in this article is not a replacement for medical advice or diagnosis.

Cognitive-behavioral therapy (CBT) 

Alongside medication, cognitive-behavioral therapy (CBT) can be a beneficial tool for symptom management. Although schizophrenia and ADHD cannot be “cured,” therapy can help individuals manage daily life and make healthy lifestyle changes that may reduce the severity or frequency of challenging symptoms. 

Cognitive-behavioral therapy is often considered the “gold standard” treatment for psychiatric disorders like anxiety disorders, bipolar disorder, and depressive disorders, which may also be comorbid with ADHD. A CBT therapist can guide you through coping techniques like mindfulness, radical acceptance, and fact-checking, which may be beneficial for those who experience hallucinations or difficulty connecting with reality. 

Social recovery therapy 

Social recovery therapy can be defined as a modality specifically geared toward supporting individuals with an increased risk of early psychosis, which can be a symptom of schizophrenia. This modality can be considered a form of cognitive-behavioral therapy that tends to be more geared toward severe symptoms than traditional CBT. 

In a 2019 study on social recovery therapy, researchers found that this modality could be a “promising psychological intervention to improve social recovery in individuals with early psychosis.” Although not explicitly adapted to manage ADHD symptoms, this modality could be used in conjunction with another treatment for a more comprehensive approach. 

Group therapy 

Group therapy can be effective in managing symptoms of ADHD and schizophrenia. In one study, group cognitive-behavioral therapy for adults with ADHD was found to improve knowledge about ADHD, self-efficacy, and self-esteem in participants, although updated evidence may be needed.

Another study found that group therapy could reduce some symptoms of schizophrenia. Participants experienced cognitive and social improvement in symptom severity. However, the study authors recommend further research to understand this connection more fully. 

Group therapy may also be effective because it usually allows individuals to connect with others who are experiencing similar challenges. Social support can be beneficial to mental and physical health, so being able to connect in this way can be healing for those who do not have a support system at home.

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Alternative support options for ADHD and schizophrenia

ADHD and schizophrenia can cause symptoms that make it difficult to seek support. For example, individuals with ADHD may struggle to set in-person appointments, and people with schizophrenia may have trouble functioning in public settings during more severe episodes. In these cases, online therapy through a platform like BetterHelp may be more convenient. Please note that individuals experiencing acute psychosis may require in-person care.

With an online platform, individuals can find unique tools like worksheets, journaling prompts, and more. In addition, they can attend sessions from home via phone, video, or live chat with a licensed therapist. 

Studies tend to support the effectiveness of online therapy. A 2022 study found that social function and attention were improved in approximately 95% of participants in an online therapy intervention targeted at managing ADHD symptoms in clients. While not much research exists on the efficacy of online therapy for schizophrenia treatment, online therapy generally produces the same results as in-person therapy.

Takeaway

ADHD and schizophrenia can be comorbid, meaning that an individual can have both conditions at once. Both ADHD and schizophrenia are usually chronic, but treatment options are available to reduce symptom severity, including medication and therapeutic modalities like CBT and social recovery therapy. For further guidance and personalized support, consider contacting a therapist online or in your area.
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