Overview
The Mood Disorder Questionnaire (MDQ) is a brief, evidence-based screening tool designed to identify symptoms of bipolar spectrum disorders, including Bipolar I and Bipolar II.
The MDQ helps clinicians recognize patterns of elevated mood, increased energy, and behavioral changes that may otherwise be misattributed to unipolar depression, anxiety, or situational stress.
What Does the MDQ Measure?
The MDQ screens for lifetime history of manic or hypomanic symptoms, including:
- Elevated or irritable mood
- Increased energy or activity
- Decreased need for sleep
- Racing thoughts or rapid speech
- Impulsivity or risky behavior
- Increased goal-directed activity
- Distractibility
It also assesses whether symptoms occurred during the same period and whether they caused functional impairment.
Who Is the MDQ For?
The MDQ is intended for:
- Adolescents (typically 12+) and adults
It is commonly used by:
- Outpatient mental health settings
- Primary care and integrated care
- Psychiatric and specialty clinics
The MDQ can be completed by the client as a self-report screening tool.
How the MDQ Is Scored
The MDQ consists of three parts:
- Symptom Checklist
A list of yes/no questions about lifetime manic or hypomanic symptoms. - Symptom Clustering
Determines whether multiple symptoms occurred during the same period. - Functional Impairment
Assesses the degree of impact on daily functioning.
Screening Criteria
A positive screen typically includes:
- Multiple endorsed symptoms
- Symptoms occurring during the same time frame
- Moderate to severe functional impairment
Scoring thresholds may vary depending on the clinical setting and population.
How the MDQ Is Used
TClinicians use the MDQ to:
- Screen for possible bipolar spectrum disorders
- Support differential diagnosis
- Identify clients who may benefit from further assessment
- Reduce the risk of misdiagnosis and inappropriate treatment
The MDQ is especially valuable when clients present with depressive symptoms that have not responded to treatment.
Interpreting MDQ Scores
MDQ results help clinicians:
- Identify risk for bipolar disorder
- Guide further diagnostic evaluation
- Inform referral decisions
- Support more appropriate treatment planning
A positive MDQ screen does not confirm a diagnosis but signals the need for comprehensive clinical assessment.
Using the MDQ on Our Platform
When administered through our platform, the MDQ allows clinicians to:
- Collect structured screening data efficiently
- View results clearly within the client record
- Track historical screening outcomes
- Support informed diagnostic conversations
This integration helps ensure mood disorder screening is consistent, accessible, and clinically meaningful.
Clinical Considerations
- The MDQ is a screening tool, not a diagnostic instrument
- False positives can occur, particularly in certain populations
- Results should be interpreted alongside clinical interview and history
- Cultural and contextual factors may influence responses
Hirschfeld, R. M. A., Holzer, C., Calabrese, J. R., Weissman, M., Reed, M., Davies, M., et al. (2003).
Validity of the Mood Disorder Questionnaire: A general population study.
American Journal of Psychiatry, 160(1), 178–180.
Bipolar spectrum symptoms.
No, it identifies risk and need for further evaluation.
Adults in clinical settings.
Yes/No questions with functional impact check.
Yes, especially during intervention or recovery.
MDQ should always be used with clinical judgement
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