Free Tool Mental Health PHQ-9 Based

Depression Screening Tool

Depression affects up to 50% of people in addiction recovery and is one of the strongest predictors of relapse. This PHQ-9 based screening gives you clarity, a score, and evidence-based next steps, in under 3 minutes.

ℹī¸ Important: This tool is based on the validated PHQ-9 instrument and is for screening and educational purposes only. It is not a clinical diagnosis. Results should be discussed with a qualified healthcare provider. If you are experiencing thoughts of self-harm, call or text 988 immediately.

Over the last 2 weeks, how often have you been bothered by the following?

Select one answer for each of the 9 questions below.

0 of 9 answered

Depression in Addiction Recovery: Understanding the Connection

Depression and addiction maintain one of the most well-documented bidirectional relationships in psychiatric medicine. Research published in the Journal of the American Medical Association estimates that approximately 30–50% of individuals with substance use disorders have a co-occurring depressive disorder, a rate two to three times higher than the general population. Understanding this connection is not academic, it is clinically essential for anyone navigating recovery.

The relationship operates in both directions simultaneously. Depression drives substance use as self-medication: alcohol temporarily elevates mood through GABA and serotonin effects; stimulants provide artificial energy and confidence to compensate for depressive anhedonia; opioids produce euphoria that temporarily overrides depressive numbness. Simultaneously, chronic substance use produces or worsens depression through neurochemical depletion, particularly the downregulation of serotonin, dopamine, and norepinephrine systems. This bidirectional reinforcement creates a vicious cycle that standard treatment approaches often fail to adequately address unless both conditions are treated simultaneously.

What the PHQ-9 Measures

The PHQ-9 (Patient Health Questionnaire-9) is a validated, nine-item depression screening instrument that measures the frequency of nine core symptoms of Major Depressive Disorder over the past two weeks. The nine items correspond directly to the DSM-5 diagnostic criteria for Major Depressive Disorder and assess: depressed mood, anhedonia (loss of interest or pleasure), sleep disturbance, fatigue, appetite changes, feelings of worthlessness or guilt, concentration difficulties, psychomotor changes, and thoughts of self-harm.

Each item is rated on a four-point scale: 0 (not at all), 1 (several days), 2 (more than half the days), and 3 (nearly every day), producing a total score from 0 to 27. The PHQ-9 has demonstrated sensitivity of 88% and specificity of 88% for major depression diagnosis at a cutpoint of 10, making it one of the most clinically reliable brief screening instruments available.

PHQ-9 Interpretation in the Context of Recovery

Interpreting PHQ-9 scores in the context of addiction recovery requires nuance. Several PHQ-9 items, particularly fatigue (Item 4), sleep disturbance (Item 3), and appetite changes (Item 5), overlap significantly with Post-Acute Withdrawal Syndrome (PAWS) symptoms and may produce elevated scores during the first weeks to months of sobriety that do not reflect clinical depression per se.

This is why this tool recommends sharing your results with a healthcare provider rather than self-diagnosing. A clinician with addiction medicine knowledge can distinguish between PAWS-related symptomatology and genuine depressive disorder, and can assess whether the temporal pattern of symptoms, appearing after sobriety or predating substance use, helps clarify the diagnostic picture. Track your PHQ-9 scores over time using this tool and our Mood Journal to provide your treatment team with longitudinal data rather than a single snapshot.

Effective Treatments for Depression in Recovery

The good news about co-occurring depression in recovery is unambiguous: it is highly treatable, and treating it effectively significantly improves both depression outcomes and sobriety outcomes simultaneously. Evidence-based treatments include Cognitive Behavioural Therapy (CBT), which has the strongest evidence base for treating both depression and addiction; antidepressant medications, particularly SSRIs and SNRIs, which are generally safe in recovery and do not carry addiction potential; Behavioural Activation, a structured approach to increasing engagement with rewarding activities that directly counters depressive withdrawal; exercise, which has equivalent efficacy to antidepressant medication for mild-to-moderate depression; and social connection, which addresses the loneliness and isolation that both depression and addiction produce.

For CBT-based self-help tools, see our CBT Worksheet Generator and Cognitive Distortion Identifier. For ongoing mood monitoring, use the Mood Journal alongside this screener.

💡 Recovery Tip: If your score is in the moderate or above range, print this report and bring it to your next appointment with your doctor, psychiatrist, or addiction counsellor. Arriving with an objective PHQ-9 score rather than a subjective description of "feeling low" significantly accelerates the clinical assessment process and demonstrates self-awareness that supports your treatment relationship.

Frequently Asked Questions