Clinically reviewed by the Sober Living Clinical Team (Medical Director & Clinical Director)
Concurrent disorders, often called dual diagnosis, describe living with a mental health condition and a substance use problem at the same time. The two are closely connected: anxiety, depression or trauma can lead to substance use, and substance use can trigger or worsen mental health symptoms. At Sober Living in Etobicoke, Toronto, we specialize in integrated concurrent disorders treatment that addresses both conditions together, in one coordinated plan, because treating them separately has been linked to poorer outcomes.
Need help right now?
- Medical emergency or suspected overdose: call 911
- Suicide Crisis Helpline: call or text 9-8-8, 24/7
- Ontario Poison Centre:1-800-268-9017
- ConnexOntario (free treatment information, 24/7): 1-866-531-2600
- Sober Living admissions (24/7, confidential): +1 (855) 787-2424
Key facts
- “Concurrent disorders” is the term used in Ontario and across Canada, including by CAMH, for co-occurring mental health and substance use problems; “dual diagnosis” means the same thing.
- Integrated treatment, where one team treats both conditions at the same time, is the recommended approach.
- Common pairings include depression or anxiety with alcohol, PTSD with alcohol or opioids, and ADHD or bipolar disorder with stimulant use.
- Some symptoms are caused by substances and fade with abstinence, so assessment continues throughout treatment.
- Sober Living provides residential dual diagnosis care with medically supervised detox, psychiatric medication review, trauma-informed therapy and safety planning.
What are concurrent disorders?
A person has concurrent disorders when they experience both a mental health problem, such as depression, anxiety, PTSD or bipolar disorder, and a substance use problem involving alcohol, drugs or prescription medications. In Ontario, the term is used by CAMH and throughout the provincial health system.
Some definitions also include problem gambling alongside substance use. The combination is common: CAMH notes that people with mental illness are more likely than the general population to have a substance use problem, and people with substance use problems are more likely to experience mental illness. Concurrent disorders can affect anyone, and they are treatable.
The link between addiction and mental health
Mental health conditions and substance use feed each other: people often use substances to self-medicate distressing symptoms, while substances change brain chemistry in ways that deepen those same symptoms.
Someone with social anxiety may drink to feel at ease, then experience more anxiety as the alcohol wears off. A person living with trauma may use opioids to numb memories, which disrupts sleep and emotional regulation. Stimulants can trigger anxiety, paranoia or mania, and heavy cannabis use has been linked to psychosis in vulnerable people. Shared factors, including genetics, early adversity, chronic stress and trauma, raise the risk of both. Breaking this cycle requires treating both sides at once.
Integrated vs sequential treatment: why it matters
Integrated treatment means one coordinated team addresses mental health and substance use together, rather than asking you to “get sober first” or “fix your mental health first”. It is the approach recommended by Canadian and international best-practice guidance.
| Model | How it works | Common problems |
|---|---|---|
| Sequential | One condition is treated first, then the other, often by different services | Untreated symptoms from the other condition can drive relapse; people may be turned away by both services |
| Parallel | Both conditions are treated at the same time by separate teams | Conflicting advice, gaps in communication, repeated assessments |
| Integrated | One team plans and delivers care for both conditions together | Requires clinicians skilled in both areas, which is the focus of our program |
At Sober Living, addiction clinicians, therapists, our Medical Director (a physician in addiction medicine) and wellness practitioners work from a single shared plan, preventing one condition from aggravating the other. Read more about our mental health treatment and individualized treatment planning.
Common concurrent disorders we treat
Concurrent disorders come in many combinations. These are some of the most common pairings and what integrated care focuses on.
- Depression and alcohol use: alcohol is a depressant that disrupts sleep and mood. Treatment combines safe detox, therapy such as CBT, and a careful review of whether antidepressant medication is needed once withdrawal has passed. See our depression treatment page.
- Anxiety and alcohol, cannabis or benzodiazepines: substances that bring short-term relief often cause rebound anxiety. We teach practical anxiety skills while supporting a safe reduction. Learn about our anxiety treatment.
- PTSD and alcohol or opioids: we stabilize safety and coping first, then introduce trauma-focused therapy such as EMDR when you are ready.
- Bipolar disorder and alcohol or stimulants: substances can trigger mood episodes and interfere with mood stabilizers. Treatment prioritizes sleep, routine and medication consistency. See mood disorders treatment.
- ADHD and stimulants or cannabis: untreated ADHD is a common driver of self-medication. Assessment clarifies the diagnosis, and treatment options are chosen with misuse risk in mind.
How we assess concurrent disorders
Good treatment starts with a thorough, ongoing assessment of both mental health and substance use, including conditions that may never have been diagnosed.
During our intake process, the clinical team uses validated screening tools and a detailed interview covering substance use history, mental health symptoms, trauma, physical health, sleep, medications, family history and social supports. A key question is whether mental health symptoms are independent or substance-induced. Withdrawal and heavy use can mimic depression, anxiety or psychosis, and some symptoms fade after a period of abstinence, often several weeks. We therefore reassess as you stabilize, rather than labelling you on day one. Where needed, we coordinate with your family doctor, psychiatrist or other specialists, with your consent.
Psychiatric medication management
Medication can be an important part of recovery for concurrent disorders, and our Medical Director reviews every prescription you arrive with and any new options that may help.
The goals are to treat symptoms effectively, avoid medications with high misuse potential where suitable alternatives exist, watch for interactions with substances and withdrawal medications, and time changes sensibly (for example, reassessing mood after detox before starting an antidepressant). Where appropriate, medication for the substance use disorder itself, such as naltrexone for alcohol use disorder or opioid agonist treatment for opioid use disorder, is offered alongside psychiatric medication. Before discharge we make sure prescriptions can continue smoothly with your community prescriber.
Get help for mental health and substance use together
Our 24/7 admissions team can arrange a free, confidential assessment for dual diagnosis treatment in Toronto.
Trauma-informed care in dual diagnosis treatment
Many people with concurrent disorders have experienced trauma, so our whole program is built on trauma-informed principles: safety, choice, collaboration, trustworthiness and empowerment.
In practice this means you are never pushed to disclose more than you are ready to, you have a voice in your treatment decisions, and staff understand how trauma can show up as anger, withdrawal, mistrust or substance use. Therapy moves in stages: first building stability and coping skills through approaches like dialectical behaviour therapy and mindfulness, then processing traumatic memories with methods such as EMDR when it is safe to do so. Group therapy and holistic activities such as yoga and creative expression help rebuild a sense of safety in the body and in relationships.
Safety planning and crisis support
People with concurrent disorders face a higher risk of suicide and overdose, so every person in our care develops a personal safety plan with their therapist.
A safety plan is a short, written guide for difficult moments. It lists your personal warning signs, coping strategies that work for you, people and places that help, professional contacts and crisis lines such as 9-8-8, and steps to make your environment safer, such as limiting access to stockpiled medications or substances. Families are invited to learn the plan so they know how to help. If you are in immediate danger, call 911.
What residential concurrent disorders treatment looks like
Programs typically run 30, 45, 60 or 90 days; people with more complex concurrent disorders often benefit from a longer stay. The first week focuses on medically supervised detox where needed, assessment and stabilization. The following weeks combine individual therapy (CBT, DBT, EMDR, motivational interviewing), group therapy, psychoeducation about both conditions, family sessions and wellness activities. The final phase focuses on relapse prevention for both substance use and mental health, and on a detailed aftercare plan.
Family support and aftercare
Concurrent disorders affect the whole family. Our family support program helps loved ones understand both conditions, communicate effectively and set healthy boundaries. After discharge, aftercare and support includes alumni check-ins, referrals to community psychiatry and counselling, and mutual-support groups, giving you the tools to manage your mental health and maintain your recovery over the long term.
We work with most major Canadian and international private insurers and help verify your benefits confidentially under Ontario’s PHIPA. Our centre is at 3 Warrendale Court in Etobicoke, near Highways 427, 401 and 407. For publicly funded services, contact ConnexOntario at 1-866-531-2600.
Frequently asked questions
What is the difference between concurrent disorders and dual diagnosis?
They mean the same thing: a person has both a mental health condition and a substance use problem. “Concurrent disorders” is the term most used in Ontario and across Canada, including by CAMH, while “dual diagnosis” and “co-occurring disorders” are common in the United States. Whatever the name, the recommended approach is integrated treatment of both conditions together.
Should I treat my addiction or my mental health first?
Current best practice is to treat both at the same time. Waiting until you are sober to address depression or trauma, or until your mental health is stable to address substance use, often means untreated symptoms drive relapse. Safety comes first, so medically supervised detox may be the initial step, but mental health care begins right away.
How do I know if my depression is caused by drinking?
Heavy drinking can cause symptoms that look like depression, and they often improve within a few weeks of stopping. If low mood continues after that, or started before the drinking, an independent depressive disorder is more likely. That is why we reassess mood during treatment rather than deciding on day one, and why your plan addresses both.
Can I keep taking my psychiatric medications during treatment?
In most cases, yes. Our Medical Director reviews every medication you take on admission, and changes are made only when there is a clear clinical reason, such as an interaction or misuse risk. We aim to coordinate with your psychiatrist or family doctor so your care stays consistent before, during and after your stay.
Is residential treatment right for concurrent disorders?
Residential care can be especially helpful when substance use and mental health symptoms are both significant, when outpatient treatment has not worked, or when home is not a safe place to recover. It offers 24/7 support, medical oversight and time to stabilize. A free, confidential assessment can help you decide which level of care suits you.
What if I am having thoughts of suicide?
You are not alone, and help is available now. Call or text 9-8-8, the Suicide Crisis Helpline, any time, day or night. If you are in immediate danger, call 911 or go to the nearest emergency department. Once you are safe, integrated treatment for mental health and substance use can help address what is driving these feelings.
Integrated care for mind and recovery
Free, confidential consultation. Dual diagnosis treatment with a coordinated clinical team in Etobicoke, Toronto.
Sources & clinical references
- CAMH — Concurrent Disorders
- Health Canada — Substance use and addiction
- Canadian Centre on Substance Use and Addiction
- National Institute on Drug Abuse — Co-occurring disorders and health conditions
- Substance Abuse and Mental Health Services Administration — Co-occurring disorders
- 9-8-8 Suicide Crisis Helpline
- ConnexOntario — Mental health and addiction services information
This page is general health information and does not replace advice from your own doctor or care team. If you are in immediate danger or think someone has overdosed, call 911.