Concurrent disorders is a term for the co-occurring presence of addiction and mental health problems. It covers many combinations, such as bipolar disorder with alcohol dependence, schizophrenia with nicotine use disorder, obsessive compulsive disorder with a cannabis problem, or borderline personality disorder with opioid use disorder. Recognizing the signs in yourself or a loved one is an important first step, and the 14 warning signs below can help you decide whether a professional assessment is worth arranging.
Concurrent disorders are also called dual disorders or co-occurring substance use and mental health problems. In Ontario, the term dual diagnosis is typically used to describe a person with an intellectual disability and a mental health problem, so it is worth asking clinicians which meaning applies to you.
Understanding the Complexity of Concurrent Disorders
Co-occurring substance use and mental health problems can show up in many ways. They may be active at the same time or at different times, in the present or the past, and their symptoms can change in form or intensity over time.
People often ask whether the mental health problem or the substance use problem started first. That is a hard question to answer. It is usually more useful to think of them as two separate problems that interact and influence each other.
Warning Signs of a Concurrent Disorder
A meaningful share of people with a substance use disorder also have a mental health problem. If you suspect that you or a loved one may be dealing with a co-occurring problem, reflect on patterns of behaviour and emotion, and look for these fourteen warning signs:
- Dependence on substances for psychological relief. Relying on alcohol or other drugs to manage overwhelming emotions such as anger, anxiety or hopelessness, or to feel “normal,” may signal an underlying mental health problem intertwined with addiction.
- Struggles with abstinence. Repeated efforts to quit, accompanied by restlessness, irritability or despair, can create a cycle that feels impossible to break.
- Social isolation or changes in relationships. Withdrawing from loved ones, or shifting toward relationships built around substance use, may point to deeper problems.
- Unpredictable mood swings. Dramatic emotional highs followed by profound lows may indicate a mental health problem that substance use is making worse.
- Attention difficulties and sleep problems. Poor concentration, racing thoughts, or too much or too little sleep are common in both mental health and substance use disorders.
- Increased impulsivity and risky behaviour. Fights, driving under the influence, overspending, stealing or unprotected sex can be signs of underlying issues.
- Neglecting responsibilities. Struggling with everyday tasks such as keeping a job, managing household chores or attending school can indicate a concurrent disorder.
- Physical health problems. Frequent illness, unexplained injuries or chronic pain can sometimes be linked to substance use or mental health problems.
- Financial issues. Lost productivity at work or heavy spending on substances may be a red flag for an underlying mental health and substance use problem.
- Legal issues. Frequent contact with law enforcement, or illegal behaviour such as impaired driving, burglary or theft, can indicate deeper problems.
- Changes in appearance. Neglecting personal hygiene or significant changes in weight may signal a co-occurring disorder.
- Memory problems. Frequent memory lapses or blackouts can be related to both substance use and mental health conditions.
- Chronic feelings of shame and guilt. Persistent guilt or shame about emotions, behaviours or substance use is often a sign of deeper mental health and substance use issues.
- Physical withdrawal symptoms. Irritability, nausea, hot and cold flashes, decreased appetite or shaking when not using substances can signal a substance use disorder and an underlying mental health problem.
Why an Accurate Diagnosis of a Concurrent Disorder Is Essential
Screening and assessment are critical for accurately diagnosing a co-occurring mental health and substance use disorder and getting people onto the right path to treatment.
Treating only one part of the problem often leads to poor results. For example, treating substance use while ignoring underlying post-traumatic stress disorder or another mental health condition can lead to relapse and ongoing difficulty.
The Cycle of Untreated Disorders
Untreated mental health or substance use problems can reinforce a damaging, vicious cycle. Substance use may temporarily ease symptoms of bipolar disorder or an anxiety disorder, but it often makes those conditions worse over time. The untreated mental health condition can then drive people toward heavier use to cope with emotional distress.
This cycle can bring legal trouble, loss of custody or family ties, financial instability, job loss and a lower quality of life. That is why it is important to identify and treat both disorders at the same time, which helps break the pattern and supports long-term recovery.
Treatment Strategies for Co-occurring Disorders
Effective treatment for co-occurring disorders takes an integrated approach that addresses substance use and mental health problems together. It often combines medical and therapeutic interventions with supportive services and relapse prevention strategies, tailored to each person.
Key Components
- A comprehensive assessment. A thorough evaluation of mental health history and substance use patterns is used to develop a personalized treatment plan.
- Medical and therapeutic interventions. Evidence-based therapies are central to the process. Cognitive behavioural therapy (CBT) helps people recognize and change negative thinking and behaviour patterns. Acceptance and commitment therapy (ACT) encourages people to accept their thoughts and feelings rather than feeling guilty for having them. Medication-assisted treatment (MAT) may be used to manage withdrawal symptoms and cravings, and to address mental health symptoms with medications such as mood stabilizers, antidepressants or antipsychotics, as prescribed by a doctor.
- Supportive services. Art and music therapy, meditation, yoga, peer support and animal therapy can help people heal emotionally, reduce isolation and build a sense of community. These are sometimes part of a residential treatment program.
- Relapse prevention planning. This work identifies triggers and cues, builds strategies for managing stress, and reduces the risk of relapse so that recovery can be sustained.
Steps to Take if You Suspect a Concurrent Disorder
If you think you or a loved one may be experiencing a co-occurring disorder, start with an assessment from a doctor or addiction professional. Bring a clear account of what you have noticed, including substance use, mood, sleep, and how daily life is going. Ask whether both the mental health and substance use sides are being assessed together.
Metamorphosis Centre for Change offers holistic concurrent disorder treatment plans that combine the strategies above. The approach integrates traditional therapies such as CBT and ACT with experiential therapies that support mind and body wellness. These include yoga, tai chi, horse therapy, music therapy, meditation and art therapy. Mind-body approaches such as eye movement desensitization and reprocessing (EMDR) therapy, acupuncture, massage and outdoor adventure therapy are also available. Together, these options aim to build self-awareness, focus and overall well-being.
Contact the Metamorphosis Centre for Change for Expert Concurrent Disorder Treatment
Metamorphosis Centre for Change offers an integrated, patient-centred approach to concurrent disorders, with personalized programs designed to support lasting recovery. If you are ready to learn more, or you have questions about our concurrent disorder treatment programs, please call 705-429-3870 or send us an inquiry through our contact page.
Frequently Asked Questions
What is a concurrent disorder?
A concurrent disorder is a co-occurring substance use problem and mental health problem. Both conditions can be present at the same time or at different points in life, and each can make the other harder to manage.
Can both problems be treated at the same time?
Yes. Effective care usually treats both the substance use and the mental health condition together, rather than one after the other, because each can keep the other going.
Which problem came first?
This is often hard to determine. Many people find it more useful to focus on how the two problems interact and what support is needed now.
How do I know if I need an assessment?
If several of the warning signs above apply to you or someone you care about, it is worth talking with a doctor or addiction professional about an assessment.
Written by Dr. Leonard Bienenstock, Medical Director / Addictions Doctor, M.D., CCFP. Dr. Bienenstock completed medical school at McGill University and his family medicine residency at Toronto Western Hospital. He has further training in addictions medicine and psychotherapy and serves as Medical Director at Metamorphosis Centre for Change.









