Depression and Chronic Pain: How to Recognise It—and What Helps

Chronic pain can affect sleep, employment, relationships, independence and a person’s sense of identity. Feeling frustrated, frightened, sad or discouraged in this situation can be an understandable human response. It does not automatically mean that someone has clinical depression.

Sometimes, however, low mood becomes more persistent, pervasive and disabling. Depression may reduce motivation, hope, concentration and the capacity to participate in rehabilitation or everyday life. Recognising it matters—but identifying depression should never be used to imply that pain is imagined or “all in the mind”.

Pain and depression are related health problems. They need to be understood together, while still being assessed and treated in their own right.

KEY POINTS

• Depression is common among people with chronic pain, but it is not inevitable.

• Pain-related distress and clinical depression overlap, but they are not the same thing.

• Screening questionnaires can identify symptoms that warrant attention; they do not replace a clinical assessment.

• A treatment may help depression without directly relieving pain, or help pain without adequately treating depression.

• Treating depression does not replace appropriate investigation, rehabilitation or treatment of the pain condition.

HOW COMMON IS DEPRESSION IN PEOPLE WITH CHRONIC PAIN?

A 2025 systematic review examined 376 studies involving more than 347,000 adults with chronic pain across 50 countries. Approximately four in ten had depressive symptoms above a clinically significant threshold. Among studies using formal diagnostic assessments, the pooled prevalence of major depressive disorder was also high. [1]

These figures require some caution. Rates varied considerably according to the pain condition, population, clinical setting and assessment method. The review also excluded chronic headache disorders. The “four in ten” figure is therefore a broad population estimate—not a prediction for an individual person or a rate that will apply to every pain clinic.

The practical message is not that everyone with chronic pain should be regarded as depressed. It is that depressive symptoms are common enough to justify thoughtful assessment, particularly when pain is accompanied by withdrawal, hopelessness, loss of interest or deteriorating function.

PAIN-RELATED DISTRESS IS NOT ALWAYS DEPRESSION

Persistent pain can produce grief for a former way of life, fear about the future, anger about delayed diagnosis, financial pressure, disrupted relationships and loss of confidence. A person may also feel demoralised—trapped by circumstances and unable to see a way forward.

These experiences can be severe and deserve support, but they are not automatically a depressive disorder.

Clinical depression generally involves persistent low mood, loss of interest or pleasure, or both, together with other changes in thinking, behaviour or physical functioning. Symptoms usually occur on most days for at least two weeks and cause meaningful distress or impairment. Diagnosis depends on the overall pattern, severity, duration and context—not on whether someone occasionally feels sad or discouraged.

This distinction protects against two opposite errors:

• Overdiagnosis: treating every understandable emotional response to pain as a psychiatric disorder.

• Underdiagnosis: assuming that hopelessness, withdrawal or loss of interest are simply unavoidable consequences of pain.

WHY DO PAIN AND DEPRESSION BECOME ENTANGLED?

There is no single explanation that applies to everyone.

Pain may disturb sleep, reduce physical activity, interrupt employment, limit valued roles and erode social connection. Repeated treatment disappointments or uncertainty about the future can further reduce hope and confidence.

Depression can, in turn, affect attention, energy, motivation, decision-making and the expectation that an activity or treatment will be worthwhile. This may make it harder to attend appointments, exercise consistently, use coping strategies or reconnect with meaningful activities.

Biological processes are also relevant. Pain and depression involve overlapping systems concerned with threat, attention, reward, stress and pain modulation. However, explanations that reduce the relationship to a simple serotonin deficiency, a single inflammatory process or one particular brain pathway are incomplete. Biological, psychological and social influences interact differently in each person. [2]

Depression may increase the intensity or intrusiveness of pain for some people, but that does not make the pain unreal. Nor does identifying depression prove that it caused the underlying pain condition.

WHAT CAN DEPRESSION LOOK LIKE WHEN SOMEONE ALREADY HAS PAIN?

Recognition can be difficult because several symptoms occur in both chronic pain and depression.

Symptoms that may arise from either condition include:

• disrupted or unrefreshing sleep;

• fatigue or reduced energy;

• impaired concentration;

• changes in appetite;

• reduced activity; and

• difficulty completing work or household tasks.

These symptoms still matter, but they need to be interpreted in context. Features that may raise greater concern about depression include:

• persistent loss of interest or pleasure, including in activities that remain physically possible;

• pervasive hopelessness extending beyond a particular pain flare or treatment setback;

• marked feelings of worthlessness, excessive guilt or being a burden;

• emotional numbness or a sustained change from the person’s usual self;

• increasing social withdrawal that cannot be explained only by physical limitation; and

• recurrent thoughts of death, suicide or self-harm.

No single symptom establishes a diagnosis. Clinicians consider when the changes began, whether they are present across different situations, how they compare with the person’s usual functioning and whether another medical condition, medicine, substance or mental health disorder may be contributing. The overlap between pain symptoms and depressive symptoms is a recognised diagnostic challenge. [2]

SCREENING IS A STARTING POINT, NOT A DIAGNOSIS

Questionnaires such as the Patient Health Questionnaire-9, or PHQ-9, can help identify depressive symptoms and monitor whether they are changing over time. Screening may be particularly useful when appointments have previously focused almost entirely on pain intensity, scans or medication.

A screening score does not, by itself:

• diagnose major depression;

• establish that depression caused the pain;

• determine which treatment is appropriate;

• measure suicide risk adequately; or

• establish whether someone is suitable for a pain procedure.

A positive result should lead to a fuller conversation. This includes assessment of mood, interest, function, symptom duration, previous episodes, medication and substance use, other mental health symptoms, personal circumstances and safety. The recent prevalence review supports systematic screening in pain settings, but also emphasises the need for appropriate assessment and referral pathways after a positive result.

WHY IDENTIFYING DEPRESSION MATTERS—WITHOUT DISMISSING PAIN

When depression and chronic pain occur together, people often experience greater disruption to work, relationships, self-care and social participation. Care may also become more complex because pain, mood, sleep, medication effects and social circumstances can reinforce one another. [2,3]

However, depression should not become a convenient explanation for all symptoms. A diagnosis of depression does not establish that pain is psychogenic, fabricated or exaggerated. It should not automatically exclude someone from rehabilitation, specialist pain care or consideration of an appropriately indicated procedure.

Indeed, the 2025 systematic review noted that people with mental health comorbidities may be excluded from pain services and clinical trials, despite these comorbidities being common. The authors called for more equitable access to specialist and interdisciplinary care.

Severe or unstable depression may alter the timing or structure of a treatment plan—for example, where immediate safety, decision-making capacity or the ability to participate in postoperative rehabilitation is a concern. That is different from treating depression as a reason to dismiss pain.

TREAT TWO RELATED PROBLEMS, NOT ONE VAGUE “PAIN–MOOD” PROBLEM

A useful treatment plan asks two separate questions:

1. What treatment is appropriate for the depressive illness?

2. What treatment is appropriate for this person’s particular pain condition and functional difficulties?

Sometimes one intervention contributes to both goals. Often, however, depression and pain require partly different treatments and different measures of progress.

PSYCHOLOGICAL TREATMENT

Pain-informed cognitive behavioural therapy can address patterns such as withdrawal, avoidance, helplessness, disrupted routines and unhelpful responses to pain flares. Behavioural activation places particular emphasis on gradually restoring meaningful and rewarding activity rather than waiting for motivation or pain relief to arrive first.

The evidence should be presented realistically. In chronic pain generally, CBT produces small average improvements in pain, disability and emotional distress. Studies focusing specifically on people with chronic pain and clinically significant psychological distress suggest that CBT may improve depressive symptoms and quality of life, while changes in pain intensity are less consistent. [4,5]

Acceptance and commitment therapy may help some people reduce the extent to which pain controls their choices and reconnect with personally meaningful activities. However, the evidence specifically for people with both chronic pain and a diagnosed depressive disorder remains less certain. It should not be promoted as a guaranteed antidepressant or pain-relieving treatment.

Psychological care is not based on the premise that pain is imaginary. It aims to reduce distress, improve coping and increase a person’s capacity to live and function in the presence of a difficult health condition.

ACTIVITY, ROUTINE AND REHABILITATION

Physical activity can form part of treatment for depression and many chronic pain conditions. For someone living with pain, the activity plan needs to be individualised, achievable and appropriate to the underlying condition, current capacity and treatment goals.

This is not simply advice to “exercise more”. A person may need help to:

• establish a sustainable baseline;

• avoid cycles of overactivity followed by prolonged recovery;

• rebuild confidence in movement;

• adapt tasks or working conditions; and

• reconnect with valued activities that pain has displaced.

Physical activity may support mood, physical health and function, but it is generally one component of care. In moderate or severe depression, it should not be presented as a substitute for indicated psychological, medical or psychiatric treatment.

MEDICATION: DO NOT CONFUSE AN ANTIDEPRESSANT WITH A DUAL-PURPOSE TREATMENT

An antidepressant can appropriately treat depression even when it has little direct effect on pain. Conversely, an antidepressant prescribed at a low dose for pain may not be treating major depression.

This is one of the most important distinctions in this area.

A 2023 Cochrane network meta-analysis found that duloxetine had the most reliable evidence among antidepressants studied for chronic pain. Even then, the average analgesic effects were small to moderate, most trials lasted only about ten weeks, and most excluded people with low mood or other significant mental health conditions. The review therefore could not establish how well its pain findings apply to people who have both chronic pain and depression. Evidence was insufficient to draw robust conclusions about the analgesic effectiveness and safety of most other antidepressants. [6]

This does not mean that other antidepressants are ineffective treatments for depression. It means that evidence for treating a depressive illness and evidence for directly reducing a particular type of pain are separate questions.

For example:

• an SSRI may be an appropriate treatment for depression despite having limited direct analgesic evidence;

• duloxetine may be considered where its benefits and risks fit both the depressive illness and a pain condition for which it has evidence;

• a tricyclic antidepressant used at a low dose for sleep or pain may not provide adequate treatment for major depression; and

• the best choice may be a combination of depression treatment and a separate pain-specific treatment rather than trying to make one medicine perform both roles.

Medication selection depends on the type and severity of depression, the pain diagnosis, other health conditions, concurrent medicines, previous treatment response, potential adverse effects, overdose safety and the person’s preferences. Public educational material should not encourage readers to start, stop or alter antidepressants without speaking with their treating clinician.

COORDINATED CARE

Depending on the person’s needs, care may involve a GP, psychologist, psychiatrist, pain medicine physician, physiotherapist, exercise physiologist, occupational therapist or other clinicians.

Coordination matters because apparently conflicting advice can otherwise emerge. One clinician may focus on reducing depressive withdrawal, another on pacing activity, another on medication adverse effects and another on a specific pain generator. These approaches should form one coherent plan rather than separate and competing explanations.

Research in primary care has shown that structured antidepressant management combined with pain self-management can improve depression and produce more modest improvements in pain and disability. This supports coordinated treatment, but it does not mean that every person will respond in the same way. [7]

MEASURE PAIN AND DEPRESSION SEPARATELY

Pain intensity alone is an incomplete measure of progress. A useful review may consider:

• depressive symptom severity;

• interest and enjoyment;

• hope and sense of agency;

• sleep and daily routine;

• self-care;

• pain interference;

• physical and social participation;

• work capacity;

• medication adverse effects; and

• safety.

Improvement may first appear as greater interest, more consistent activity, better self-care or less hopelessness—even if the pain score has not yet changed substantially.

Equally, improvement in pain does not guarantee that depression will resolve. If pain improves while loss of interest, guilt, hopelessness or suicidal thinking persists, the depressive illness still requires attention. If depression improves while pain and disability remain severe, the pain and rehabilitation plan still needs review.

WHEN TO SEEK URGENT HELP

Thoughts of suicide or self-harm should always be taken seriously. Suicidal thinking is more common among people with chronic pain, although published estimates vary considerably between populations and studies. [8]

In Australia:

• Call Triple Zero (000) or attend the nearest emergency department if there is immediate danger.

• Call Lifeline on 13 11 14, available 24 hours a day.

• Call the Suicide Call Back Service on 1300 659 467 for telephone or online counselling support.

Current Australian crisis information is available through Healthdirect.

THE KEY MESSAGE

Treating depression is not an admission that pain is “psychological”. It is treatment of a common and potentially serious condition that can add substantially to suffering, disability and risk.

At the same time, treating depression should not replace appropriate assessment and management of pain. The goal is not to decide whether symptoms are physical or psychological. It is to understand how the person’s pain, mood, health, behaviour and circumstances interact—and to build a plan that addresses each of them without blame or oversimplification.

GENERAL INFORMATION DISCLAIMER

This article provides general educational information and is not a substitute for assessment, diagnosis or advice from your own healthcare professionals. Treatment choices depend on the type of pain, the pattern and severity of depressive symptoms, other health conditions, concurrent medicines and individual circumstances. Do not start, stop or change prescribed medicines because of this article. Seek urgent help if you or someone else may be at risk of harm.

REFERENCES

1. Aaron RV, Ravyts SG, Carnahan ND, et al. Prevalence of depression and anxiety among adults with chronic pain: a systematic review and meta-analysis. JAMA Network Open. 2025;8(3):e250268. doi:10.1001/jamanetworkopen.2025.0268.

2. Holmes A, Christelis N, Arnold C. Depression and chronic pain. Medical Journal of Australia. 2013;199(6 Suppl):S17–S20. doi:10.5694/mja12.10589.

3. De La Rosa JS, et al. Co-occurrence of chronic pain and clinically significant symptoms of anxiety and/or depression in US adults: prevalence, functional impacts and opportunities. Pain. 2024;165(3):666–673.

4. Williams AC de C, Fisher E, Hearn L, Eccleston C. Psychological therapies for the management of chronic pain excluding headache in adults. Cochrane Database of Systematic Reviews. 2020;8:CD007407. doi:10.1002/14651858.CD007407.pub4.

5. Sanabria-Mazo JP, Colomer-Carbonell A, Fernández-Vázquez Ó, et al. A systematic review of cognitive behavioural therapy-based interventions for comorbid chronic pain and clinically relevant psychological distress. Frontiers in Psychology. 2023;14:1200685. doi:10.3389/fpsyg.2023.1200685.

6. Birkinshaw H, Friedrich CM, Cole P, et al. Antidepressants for pain management in adults with chronic pain: a network meta-analysis. Cochrane Database of Systematic Reviews. 2023;5:CD014682. doi:10.1002/14651858.CD014682.pub2.

7. Kroenke K, Bair MJ, Damush TM, et al. Optimized antidepressant therapy and pain self-management in primary care patients with depression and musculoskeletal pain: a randomized controlled trial. JAMA. 2009;301(20):2099–2110. doi:10.1001/jama.2009.723.

8. Kwon CY, Lee B. Prevalence of suicidal behaviour in patients with chronic pain: a systematic review and meta-analysis of observational studies. Frontiers in Psychology. 2023;14:1217299. doi:10.3389/fpsyg.2023.1217299.

9. Healthdirect Australia. Depression; mental health crisis support; mental health helplines. Accessed August 2026.