What do the CADDRA guidelines say about ADHD with co-occurring conditions?
Quick answer
CADDRA recommends treatment order based on safety and impairment, with severe depression and unstable bipolar disorder taking priority. ADHD and substance-use disorders usually need concurrent care, unless severe substance use requires initial stabilisation. Referral should be considered when risk, diagnostic uncertainty or treatment complexity calls for specialist care. (caddra.ca)
CADDRA sets priorities, not one fixed treatment order
CADDRA recommends an individualised order of care. This page draws on its Canadian ADHD Practice Guidelines, edition 4.1 (2020), particularly Chapter 2 on co-occurring conditions. (caddra.ca)
Ask for a plan you can explain back in plain words: what is happening now, what is waiting, and what would change the order. Bring this question even if you already have an ADHD diagnosis. You do not have to choose the sequence yourself before seeking care.
These are recommendations for adults and young people, informed by research and expert judgement. They are not results from a controlled comparison of complete treatment sequences, and do not carry a measured percentage benefit for following the whole plan. (caddra.ca)
This page is educational. It does not diagnose either condition or recommend starting, stopping or changing medication.
What should be treated first?
Severity can change the priority without making the other condition unimportant.
| Co-occurring condition | Treatment priority | Question to ask |
|---|---|---|
| Anxiety | Address the condition causing greater impairment first. | How will changes in anxiety be monitored? |
| Mild depression | ADHD care may come first if ADHD is the main difficulty. | When will mood be reviewed? |
| Moderate or severe depression | Prioritise depression, particularly when there is self-harm risk. | What is the safety and follow-up plan? |
| Bipolar disorder | Establish mood stability before ADHD medication; consider specialist input. | What will count as stable enough? |
| Substance-use disorder | Usually address both conditions concurrently. Severe substance-use problems may need stabilisation first. | Who is coordinating both parts of care? |
| Autism or tic disorders | Adapt ADHD care and monitoring rather than automatically excluding treatment. | What condition-specific adjustments are needed? |
These priorities still leave room for your goals. Ask what each part of the plan is intended to change, what will be monitored, and when the order will be reviewed. Being offered care for ADHD should not leave a separate concern without a plan.
When should a specialist become involved?
Specialist input is appropriate when the plan exceeds the treating clinician's experience or available monitoring. (camh.ca)
CADDRA flags suspected bipolar disorder, severe or worsening depression, and substance use that complicates diagnostic clarity. (caddra.ca)
CAMH's Adult ADHD guidance, adapted from Psychiatry in Primary Care (CAMH, 2019), also advises considering referral for the following situations. (camh.ca)
- Co-occurring conditions requiring multiple medications.
- Complex medical problems needing several disciplines.
- Side effects that are difficult to manage.
- An inadequate response after a treatment trial.
Ask what the referral is meant to resolve, who remains responsible while it is pending, and when your next review will happen. Request a clear route for reporting symptoms that worsen before that appointment. You can also ask for a copy of the referral question to take to the receiving service.
New mania or psychotic symptoms need prompt clinical assessment, not a routine wait for ADHD follow-up. (caddra.ca)
Research informs sequencing without proving one universal order
Studies support targeted treatment, but their results do not test CADDRA's entire sequence of care. The distinction matters when a recommendation sounds like a promise of a particular outcome. (onlinelibrary.wiley.com)
Bipolar disorder: benefits studied alongside mood-stabilising care
Miskowiak et al.'s ISBD systematic review (Bipolar Disorders, Wiley, 2024) included 17 studies and 2,136 participants with bipolar disorder. Only four studies assessed ADHD symptoms, mostly in young people. (onlinelibrary.wiley.com)
One four-week randomised crossover trial compared an added stimulant with placebo in 16 children and adolescents with both conditions. ADHD symptom scores improved by a large amount, an effect size around 0.9 standard deviations. No increased mania signal was observed across the review with mood-stabilising treatment, but that does not prove risk is absent. (onlinelibrary.wiley.com)
Substance-use disorder: ADHD improvement is a separate outcome
Cunill et al.'s systematic review and meta-analysis (Journal of Psychopharmacology, Sage, 2015) pooled 13 randomised placebo-controlled trials involving 1,271 people with ADHD and substance-use disorders. Across the included adult and adolescent samples, ADHD medication produced a small-to-moderate reduction in ADHD symptoms compared with placebo. There was no clear benefit for abstinence or staying in treatment. (journals.sagepub.com)
Potential benefits still need to be weighed against side effects, interactions and mood destabilisation; treatment decisions belong with the prescribing clinician. A practical implication is to keep separate goals for ADHD symptoms and the co-occurring condition, rather than counting progress in one as proof of recovery in the other. (medfam.umontreal.ca)
What the evidence does not show
These studies do not show that one fixed sequence produces the right outcome for every adult or teen. (onlinelibrary.wiley.com)
- Bipolar findings do not establish that ADHD medication is appropriate during unstable mood. Selected participants and brief trials cannot rule out uncommon harms. (onlinelibrary.wiley.com)
- Reduced ADHD symptoms are not the same as abstinence or remaining in substance-use treatment. Those outcomes need their own follow-up. (journals.sagepub.com)
- Recommendations are not a promise about a particular person's response. Ask which parts of the plan reflect research findings and which reflect clinical judgement. (medfam.umontreal.ca)
The practical implication is to ask for a reason whenever a treatment is deferred and a clear point for revisiting it. Avoid reading 'treat this first' as 'ignore everything else indefinitely'.
None of these sources evaluates Finding Focus or certifies outcomes for people receiving care through Finding Focus.
How this applies in Canada
A practical Canadian starting point is your usual primary-care clinician, with specialist input matched to the co-occurring condition. CAMH describes this shared approach for complex adult ADHD care. (camh.ca)
Take the sequencing question to the appointment and ask for a written plan that answers the following.
- Priority: Which condition is being addressed first, and what safety concern or daily-life difficulty explains that choice?
- Parallel care: What can begin now while another concern is being stabilised? Ask whether a referral changes every part of the plan or only a particular treatment decision.
- Review point: What would count as enough stability or improvement to reconsider the next step? Ask for a review date rather than an undefined wait.
- Responsibility: Who will coordinate the referral, share relevant information with your consent, and remain available between appointments?
- Monitoring: Which changes should prompt an earlier call, and which need urgent help? Ask who to contact if they happen outside scheduled appointments.
If different services are involved, ask each one to confirm what it is taking responsibility for. Keep a copy of the agreed plan and ask how updates will reach the other clinicians. Confirm referral eligibility and intake requirements directly with the receiving service rather than assuming that a guideline recommendation guarantees admission.
Bring the plan back to the next review. Describe what has changed in everyday life and what remains difficult, instead of judging the whole plan by a single good or difficult day. Ask whether the original priority still fits.
For information about supportive services, see Finding Focus's CBT for ADHD and ADHD coaching service pages.
Common questions
Related questions, answered
Not automatically. CAMH's guidance bases referral on clinical complexity, medication needs, side effects and response to treatment, rather than the number of diagnoses alone. Ask whether your usual clinician can coordinate the plan and whether specialist advice is needed for a particular question. The answer can change as the situation changes. (camh.ca)
No. CADDRA's recommendation is to address both conditions, not to start every intervention on the same day. Ask the clinician which supports can begin together, which changes should be staggered, what each change is intended to address, and whom to contact if difficulties emerge. (caddra.ca)
Invite your teen to identify what they want help with, rather than arriving with a treatment order already decided. Bring a short list of current supports, unresolved concerns and questions about follow-up. Ask how the young person's priorities will be included, who will coordinate any referral, and what information can be shared with consent.
Helpful next steps
References
- 1.CADDRA. Canadian ADHD Practice Guidelines, edition 4.1, Chapters 2 and 7. Canadian ADHD Resource Alliance, 2020. View source ↗
- 2.Bond et al. CANMAT task-force recommendations on mood disorders and adult ADHD. Annals of Clinical Psychiatry, American Academy of Clinical Psychiatrists, 2012. View source ↗
- 3.Centre for Addiction and Mental Health. Adult ADHD: when to refer, adapted from Psychiatry in Primary Care. CAMH, 2019. View source ↗
- 4.Miskowiak et al. ISBD Targeting Cognition Task Force systematic review of ADHD therapies in bipolar disorder. Bipolar Disorders, Wiley, 2024. View source ↗
- 5.Cunill et al. Pharmacological treatment of attention deficit hyperactivity disorder with co-morbid drug dependence. Journal of Psychopharmacology, Sage, 2015. View source ↗
- 6.Public Health Agency of Canada. Preventing suicide: When and how to help. Government of Canada, updated January 10, 2024. View source ↗
This article is for educational purposes only and is not medical advice, diagnosis, or treatment. Always consult a licensed healthcare professional about your individual situation. If you are in crisis or thinking about self-harm, call or text 9-8-8, Canada’s Suicide Crisis Helpline, at any time.
Finding Focus uses AI tools to help research and draft some articles. Every article is edited and fact-checked by the Finding Focus team before publication. See our editorial and medical review policy.
