If you or someone you know is in crisis right now: call or text 988 (Suicide & Crisis Lifeline). For a possible overdose or any medical emergency, call 911. For help finding treatment, the SAMHSA National Helpline is free and open 24/7 at 1-800-662-4357.
The short answer
Dual diagnosis, also called co-occurring disorders, means having a substance use disorder and a mental health condition at the same time, such as depression, anxiety or PTSD. It is common, and the two conditions affect each other. The best approach is integrated treatment: addressing both together, by a team that understands both.
What is dual diagnosis?
A person with dual diagnosis has at least one mental health disorder and at least one substance use disorder. Common combinations include:
- Depression and alcohol or opioid use disorder
- Anxiety disorders and alcohol, cannabis or sedative use disorder
- PTSD and substance use disorders
- Bipolar disorder and substance use disorders
- ADHD and substance use disorders
- Psychotic disorders and substance use disorders
Having one does not mean you will develop the other, but the two often occur together.
Why do they overlap?
Researchers point to several reasons:
- Self-medication. Some people use substances to cope with symptoms such as anxiety, trauma memories or low mood. This can bring short-term relief and long-term harm.
- Shared risk factors, such as genetics, early trauma, chronic stress and brain differences.
- Substance effects. Substance use can trigger or worsen mental health symptoms.
- A two-way relationship. Each condition can make the other harder to manage.
None of this is a personal failing. Both are health conditions that respond to treatment.
Why treating both matters
Treating only the substance use, or only the mental health condition, often leaves the other to undermine recovery. Untreated depression can fuel relapse, and continued substance use can make mental health symptoms worse.
Today, guidelines favor integrated treatment: both conditions treated at the same time, with a coordinated plan and one team, rather than one after the other or in separate places.
Signs you may have co-occurring disorders
- Mood swings, depression, anxiety or panic that do not go away when you are not using
- Trauma symptoms, such as flashbacks or nightmares
- Using to calm nerves, sleep, numb feelings or feel “normal”
- Mental health symptoms that began or worsened with substance use
- Past attempts at treatment that helped one problem but not the other
- Thoughts of suicide or self-harm. Call or text 988.
These signs are not a diagnosis. Only a qualified professional can assess you.
How it is diagnosed
Diagnosing both conditions can be tricky, because substance use and mental health symptoms overlap. A clinician will ask about your history, symptoms and timeline, and may observe you over time. Honest answers about everything you use help the team separate what is caused by substances from what is a separate condition.
(See [What Is a Substance Use Disorder? Signs, Stages and When to Seek Help].)
What integrated treatment includes
- Comprehensive assessment of both conditions
- Therapy, such as CBT, DBT and trauma-focused approaches. (See [Evidence-Based Therapies in Addiction Treatment: CBT, DBT and Contingency Management].)
- Medication for mental health conditions, managed by a psychiatrist or qualified prescriber
- Medication for substance use disorders, such as for alcohol or opioid use. (See [Medication-Assisted Treatment (MAT): How It Works and Who It’s For].)
- Case management and coordination between providers
- Peer support and family involvement
- Relapse prevention and crisis planning, including a safety plan
Do not stop prescribed psychiatric medication suddenly without talking to your doctor. Stopping can cause symptoms to return or become dangerous.
Levels of care for dual diagnosis
Dual diagnosis can be treated across all levels, from residential to outpatient. People with severe or unstable symptoms may need more structured care. (See [Inpatient vs Outpatient Rehab: Which Level of Care Is Right for You?] and [PHP vs IOP: Partial Hospitalization and Intensive Outpatient Compared].)
How to find a program that does this well
Programs differ in how well they treat co-occurring conditions. Clinicians sometimes describe programs as “co-occurring capable” or “co-occurring enhanced,” depending on how fully they integrate mental health care. Ask:
- Do you treat substance use and mental health conditions together?
- Do you have a psychiatrist or prescriber on staff, and how often are they available?
- Which licensed mental health clinicians work here?
- What therapies do you use for trauma, depression and anxiety?
- How do you manage psychiatric medication?
- What is your plan if someone is in crisis?
- How do you coordinate with my outside doctors or therapist?
Red flags:
- “We don’t treat people with mental illness.”
- Pressure to stop psychiatric medication
- No licensed mental health staff
- Treating mental health as an afterthought
(See [How to Find a Legitimate Rehab Center: Accreditation and Red Flags] and [15 Questions to Ask a Rehab Center Before You Sign Up].)
Safety and crisis planning
Co-occurring disorders can raise the risk of suicide. If you or someone you know is having thoughts of suicide or self-harm, call or text 988. For an emergency, call 911. A treatment plan should include a written safety plan: warning signs, coping steps, people to call and what to do in a crisis.
Insurance and cost
Federal and state laws generally require many health plans to cover mental health and substance use treatment on terms comparable to other medical care, though coverage details vary. Check your benefits and ask the program to verify them. (See [Does Insurance Cover Rehab? How to Check Your Benefits Step by Step] and [How Much Does Rehab Cost in the U.S.? 2026 Price Guide].)
Recovery with co-occurring disorders
Recovery is possible, but it can take time and patience. Both conditions need ongoing attention, and setbacks do not mean failure. A good aftercare plan covers both: therapy, medication management, peer support and healthy routines. (See [What Is Aftercare? How to Build a Relapse-Prevention Plan] and [Relapse Is Not Failure: What to Do After a Slip].)
If you are a family member
Learn about both conditions, encourage treatment that addresses both and take care of yourself. Be patient: symptoms can look like willpower problems but are health conditions. (See [How to Talk to a Loved One About Addiction Without Pushing Them Away].)
Frequently asked questions
What is dual diagnosis?
Having a substance use disorder and a mental health condition at the same time. Also called co-occurring disorders.
Which mental health conditions commonly occur with addiction?
Depression, anxiety, PTSD, bipolar disorder, ADHD and psychotic disorders, among others.
Should both be treated at the same time?
Generally yes. Integrated treatment is considered best practice because each condition can worsen the other.
Can I take psychiatric medication in rehab?
Often yes, and it should be managed by qualified clinicians. Never stop prescribed medication without medical advice.
Which comes first, the addiction or the mental health condition?
It varies. Sometimes mental health symptoms come first, sometimes substance use does, and sometimes both develop together.
How do I know if a program treats dual diagnosis?
Ask whether it treats both together and has a psychiatrist, licensed mental health clinicians and a crisis plan.
Can people recover from dual diagnosis?
Yes. With integrated treatment and continuing support, many people improve both their mental health and their substance use.
Sources
- SAMHSA. Co-Occurring Disorders and Other Health Conditions. samhsa.gov
- National Institute on Drug Abuse (NIDA). Common Comorbidities with Substance Use Disorders Research Report. nida.nih.gov
- American Society of Addiction Medicine. The ASAM Criteria. asam.org
- SAMHSA. National Helpline and FindTreatment.gov. samhsa.gov
This article is for general information only and is not medical advice. It does not replace a diagnosis or treatment from a qualified health professional.