• Work Loss Data Institute. Mental illness. Corpus Christi (TX): Work Loss Data Institute; 2008. 180 p. [231 references]

This is the current release of the guideline.

This guideline updates a previous version: Work Loss Data Institute. Stress related conditions and other mental disorders. Corpus Christi (TX): Work Loss Data Institute; 2007 Apr 12. 153 p.

The Official Disability Guidelines product line, including ODG Treatment in Workers Comp, is updated annually, as it has been since the first release in 1996.

Work-related stress, major depressive disorder, and other mental disorders

Counseling
Diagnosis
Evaluation
Management
Treatment

Family Practice
Internal Medicine
Psychiatry
Psychology

Advanced Practice Nurses
Health Care Providers
Health Plans
Nurses
Physician Assistants
Physicians
Psychologists/Non-physician Behavioral Health Clinicians

To offer evidence-based step-by-step decision protocols for the assessment and treatment of workers' compensation conditions

Workers with occupational stress, major depressive disorder, and other mental disorders

The following interventions/procedures were considered and recommended as indicated in the original guideline document:

1. Acceptance and commitment therapy (ACT)
2. Activity restrictions/Work modifications
3. Antidepressants (the choice of first-line therapy between selective serotonin reuptake inhibitors [SSRIs] and tricyclic antidepressants [TCA] is currently under study)
4. Aromatherapy
5. Cognitive therapy for depression, panic disorder, post-traumatic stress disorder, general stress, and major depressive disorder (MDD)
6. Cognitive behavioral stress management (CBSM) to reduce injury and illness
7. Computer-assisted cognitive therapy
8. Depression screening
9. Disease management programs
10. Distractive methods (to reduce acute stress)
11. Duloxetine (Cymbalta®)
12. Electroconvulsive therapy (ECT)
13. Exercise
14. Expatriate employee adjustment support
15. Kava extract (for anxiety)
16. Light therapy
17. Major depressive disorder, diagnosis and treatment (mild, moderate, severe and psychotic presentations)
18. Massage therapy
19. Mind/body interventions (for stress relief)
20. Minnesota multiphasic personality inventory (MMPI)
21. Music (for relaxation/stress management)
22. Opioid antagonists (naltrexone, acamprosate) for alcohol dependence
23. Patient education (to reduce stress related to illness)
24. Peer support (for postpartum depression)
25. Psychological evaluations including pre intrathecal drug delivery systems (IDDS) and spinal cord stimulator (SCS) trial
26. Return to work
27. St. John's wort
28. Stress inoculation training
29. Stress management, behavioral/cognitive interventions
30. Stress management, physical interventions (aerobic exercise)
31. Therapist optimism
32. Yoga

The following interventions/procedures are under study and are not specifically recommended:

1. Acupressure
2. Acupuncture
3. Antidepressants - SSRIs versus TCAs
4. Brain wave synchronizers for stress reduction
5. Depression: effect on heart health and the gene factor
6. Eye movement desensitization and reprocessing (EMDR)
7. Folate (for depressive disorders)
8. Hypnosis
9. Pharmaceuticals versus behavioral therapy for tension headaches
10. Psychosocial and pharmacological treatment (for deliberate self harm)
11. Reiki
12. SAMe (S-adenosylmethionine)
13. Stress and effects: atherosclerosis, blood pressure, depression, heart-related interventions, mental performance, and physiology
14. Therapeutic touch
15. Vitamin and mineral supplements including vitamins B6 and B12

The following intervention/procedure was considered, but is not recommended:

Psychological debriefing (for preventing post-traumatic stress disorder)

Effectiveness of treatments in reducing stress and anxiety

Hand-searches of Published Literature (Primary Sources)
Searches of Electronic Databases

Work Loss Data Institute (WLDI) conducted a comprehensive medical literature review (now ongoing) with preference given to high quality systematic reviews, meta-analyses, and clinical trials published since 1993, plus existing nationally recognized treatment guidelines from the leading specialty societies. WLDI primarily searched MEDLINE and the Cochrane Library.  In addition, WLDI also reviewed other relevant treatment guidelines, including those in the National Guideline Clearinghouse, as well as state guidelines and proprietary guidelines maintained in the WLDI guideline library. These guidelines were also used to suggest references or search terms that may otherwise have been missed. In addition, WLDI also searched other databases, including MD Consult, eMedicine, CINAHL, and conference proceedings in occupational health (i.e., American College of Occupational and Environmental medicine [ACOEM]) and disability evaluation (i.e., American Academy of Disability Evaluating Physicians [AADEP], American Board of Independent Medical Examiners [ABIME]). Search terms and questions were diagnosis, treatment, symptom, sign, and/or body-part driven, generated based on new or previously indexed existing evidence, treatment parameters and experience.

In searching the medical literature, answers to the following questions were sought: (1) If the diagnostic criteria for a given condition have changed since 1993, what are the new diagnostic criteria? (2) What occupational exposures or activities are associated causally with the condition? (3) What are the most effective methods and approaches for the early identification and diagnosis of the condition? (4) What historical information, clinical examination findings or ancillary test results (such as laboratory or x-ray studies) are of value in determining whether a condition was caused by the patient's employment? (5) What are the most effective methods and approaches for treating the condition? (6) What are the specific indications, if any, for surgery as a means of treating the condition? (7) What are the relative benefits and harms of the various surgical and non-surgical interventions that may be used to treat the condition? (8) What is the relationship, if any, between a patient's age, gender, socioeconomic status and/or racial or ethnic grouping and specific treatment outcomes for the condition? (9) What instruments or techniques, if any, accurately assess functional limitations in an individual with the condition? (10) What is the natural history of the disorder? (11) Prior to treatment, what are the typical functional limitations for an individual with the condition? (12) Following treatment, what are the typical functional limitations for an individual with the condition? (13) Following treatment, what are the most cost-effective methods for preventing the recurrence of signs or symptoms of the condition, and how does this vary depending upon patient-specific matters such as underlying health problems?

Criteria for Selecting the Evidence

Preference was given to evidence that met the following criteria: (1) The article was written in the English language, and the article had any of the following attributes: (2) It was a systematic review of the relevant medical literature, or (3) The article reported a controlled trial – randomized or controlled, or (4) The article reports a cohort study, whether prospective or retrospective, or (5) The article reports a case control series involving at least 25 subjects, in which the assessment of outcome was determined by a person or entity independent from the persons or institution that performed the intervention the outcome of which is being assessed.

More information about the selection of evidence is available in "Appendix. ODG Treatment in Workers' Comp. Methodology description using the AGREE instrument" (see "Availability of Companion Documents" field).

Not stated

Weighting According to a Rating Scheme (Scheme Given)

Review of Published Meta-Analyses
Systematic Review

The Work Loss Data Institute (WLDI) reviewed each article that was relevant to answering the question at issue, with priority given to those that met the following criteria: (1) The article was written in the English language, and the article had any of the following attributes: (2) It was a systematic review of the relevant medical literature, or (3) The article reported a controlled trial – randomized or controlled, or (4) The article reported a cohort study, whether prospective or retrospective, or (5) The article reported a case control series involving at least 25 subjects, in which the assessment of outcome was determined by a person or entity independent from the persons or institution that performed the intervention the outcome of which is being assessed.

Especially when articles on a specific topic that met the above criteria were limited in number and quality, WLDI also reviewed other articles that did not meet the above criteria, but all evidence was ranked alphanumerically (see the Rating Scheme of the Strength of Evidence field) so that the quality of evidence could be clearly determined when making decisions about what to recommend in the Guidelines. Articles with a Ranking by Type of Evidence of Case Reports and Case Series were not used in the evidence base for the Guidelines. These articles were not included because of their low quality (i.e., they tend to be anecdotal descriptions of what happened with no attempt to control for variables that might effect outcome). Not all the evidence provided by WLDI was eventually listed in the bibliography of the published Guidelines. Only the higher quality references were listed. The criteria for inclusion was a final ranking of 1a to 4b (the original inclusion criteria suggested the methodology subgroup), or if the Ranking by Type of Evidence was 5 to 10, the quality ranking should be an "a."

Not stated

Not applicable

The guideline developers reviewed published cost analyses.

External Peer Review

Prior to publication, select organizations and individuals making up a cross-section of medical specialties and typical end-users externally reviewed the guideline.

Refer to the original guideline document for the outline of treatment planning and introductory discussion of claims of mental illness within workers compensation.

Major Depressive Disorder

Warning: It is extremely difficult to credibly justify a claim of work-relatedness for Major Depressive Disorder (MDD). Subsequently, individuals who are treated within workers compensation for this disorder are going to be at an elevated risk of unjustifiably being exposed to the reliably detrimental health effects of involvement in workers' compensation. Scientific findings have reliably indicated that involvement in workers compensation leads to worse clinical outcomes (worse than the outcomes that are obtained when the treatment is delivered outside of the workers compensation system).

Major Depressive Disorder, Definition

Warning: this is a highly summarized definition that is not intended to provide a full understanding of Major Depressive Disorder. It is instead simply intended to provide readers with a simple overview.

The American Psychiatric Association's diagnostic manual (American Psychiatric Association: Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition – Text Revision) defines Major Depressive Disorder as a mental illness that is characterized by one or more Major Depressive Episodes without a history of Manic, Mixed, or Hypomanic Episodes (some details that will help to provide an understanding of what this definition means are provided below). This mental illness is typically manifested in phases – the person is mentally ill for a period of time, and is then typically free from the symptoms of the mental illness for a period of time, but will probably develop additional episodes of symptoms in the future.

The "major depressive episodes" to which the above definition refers are the phases when the symptoms are present. These episodes are defined as: (1) a period of at least 2 weeks during which there is either depressed mood or the loss of interest or pleasure in nearly all activities; (2) the individual also experiences at least four additional symptoms drawn from a list that includes changes in appetite or weight, sleep disturbance, psychomotor agitation or psychomotor retardation, decreased energy, feelings of worthlessness or guilt, difficulty thinking/concentrating/making decisions, recurrent thoughts of death or suicidal ideation/plans/attempts; and (3) the symptoms must persist for most of the day, nearly every day, for at least 2 consecutive weeks.

The portion of the definition which reads "without a history of Manic, Mixed, or Hypomanic Episodes" serves to separate Major Depressive Disorder from the Bipolar and Cyclothymic Disorders.

Major Depressive Disorder, Diagnosis

The essential core of the diagnostic evaluation is the protocol provided in the American Psychiatric Association's diagnostic manual. The diagnostician should compare the claimant's presentation to all of the information in that protocol, including diagnostic features, associated features and disorders, course, and differential diagnosis.

The following examples of issues from that protocol are not intended to serve as a substitute for the full protocol. These examples are only being provided in order to give readers some idea of what the protocol involves, and to at least partially convey the complex nature of the protocol.

MDD is characterized by a history of one or more Major Depressive Episodes. These episodes are phases when the symptoms are present for most of the day, nearly every day, for at least 2 consecutive weeks.

Diagnostic features for such major depressive episodes include:

• A period of at least 2 weeks during which there is:
  1. A depressed mood, and/or
  2. The loss of interest or pleasure in nearly all activities

  At least four additional symptoms drawn from a list that includes:

  3. Changes in appetite or weight
  4. Sleep disturbance
  5. Psychomotor agitation (e.g., observable restlessness) or psychomotor retardation (e.g., observably moving more slowly than usual)
  6. Decreased energy
  7. Feelings of worthlessness or guilt
  8. Difficulty thinking/concentrating/making decisions
  9. Recurrent thoughts of death or suicidal ideation/plans/attempts

Course: This mental illness is typically manifested in phases – the person is mentally ill for a period of time, and is then typically free from the symptoms of the mental illness for a period of time, but will probably develop additional episodes of symptoms in the future.

Differential Diagnosis: The person with this disorder has not experienced any Manic, Mixed, or Hypomanic Episodes, (which would push the diagnosis toward the Bipolar and Cyclothymic disorders, instead of MDD). The symptoms cannot be attributed to any other mental illness, or to any general medical condition.

Psychological Tests (e.g., current editions of the Minnesota Multiphasic Personality Inventory, Battery for Health Improvement, Millon Clinical Multiaxial Inventory, Structured Interview of Reported Symptoms) can be used as an important adjunct to the diagnostic process, specifically for the purpose of introducing an objective element to a process that is otherwise completely subjective.

Thorough Review of Claimant's History can ideally involve an examination of records from the claimant's entire life, and collateral reports. This thorough type of approach is preferable to relying on the report of the claimant, because scientific findings have consistently revealed that an examinee's report of his or her history is not a credible basis for clinical decision-making.

Any such diagnostic evaluation (and associated treatment planning) should take place on an independent basis. If the evaluation does not take place on an independent basis, then the clinician must avoid any discussion regarding forensic issues such as work-relatedness, disability, etc.).

Stress

Initial Evaluation

Focus on identifying possible red flags or warning signs for potentially serious psychopathology that would require immediate specialty referral. Red flags may include impairment of mental functions, overwhelming symptoms, signs of substance abuse, or debilitating depression. In the absence of red flags, the occupational or primary care physician can handle most common stress-related conditions safely.

In talking to the patient, it is important for the physician to get him or her to try and explain or pinpoint incidents or reasons for the stress, rather than to just generalize (i.e., "I hate my job," "Everything makes me stressed out," etc.). The physician may have to ask more specific questions about work or home life if the patient is initially unwilling or unable to address specific issues.

Occupational stress usually stems from one of three common models:

1. Person-environment fit model: Poor job fit, such as a mismatch between the skills of the individual and the demands of the job, or a disparity between the individual's career-related desires versus actual opportunities presented, is a leading cause of workplace stress.
2. Demand control model: Jobs that place high demands on the worker but give him or her little control or opportunities for decision-making lead to high job strain, a source of stress that is consistently linked as a contributor to physical conditions such as cardiovascular mortality, heart disease, and hypertension. Consideration should be given to the influence of the individual's occupational and personal history, which may have an effect on how this model applies to his or her situation.
3. Effort-reward model: Shows that stress is often the result of high effort without social reward. Like the demand control model, this model points out that a low ratio of effort to reward leads to sustained autonomic arousal and can cause physical effects such as high blood pressure or myocardial infarction.

Exploration of how and if the patient's stress follows the path of one of the above models will be helpful in determining treatment.

More specific sources of stress include bereavement, illness, familial changes or disorder, or other common and/or traumatic life changes. Time off work may be helpful, although the ultimate goal should be to preserve the patient's ability to function both occupationally and socially. Time off should not be so excessive that the employee loses his or her sense of function and appreciation at work and at home.

Initial Therapy

1. Pursuing the patient's thoughts on how his or her stress relates to the above models may help determine the source of stress and cultivate ideas on how to eliminate or cope with the stress. Patient education and understanding about stress is necessary for effective stress management to take place.
2. Other common treatment pathways include the use of one or more of the following:
   1. Relaxation techniques (such as meditation)
   2. Exercise (aerobic exercise has been shown to positively influence mood)
   3. Behavioral training (such as time management, anger management, assertiveness, or conflict resolution training)
   4. Stress inoculation therapy
   5. Cognitive therapy
   6. Modified work
   7. Organizational interventions
3. Pharmaceutical therapy (limited, short-term use of anti-anxiety agents to improve function--anything else should be used in conjunction with a specialty referral)

Follow-up visits are an important part of treatment and should be conducted by a mid-level practitioner in person or via phone every three or four days, depending on the severity of the case, while a path to recognizable treatment is established and followed. Failure to improve or make significant progress after several months may indicate the need for psychiatric assessment or counseling.

None provided

During the comprehensive medical literature review, preference was given to high quality systematic reviews, meta-analyses, and clinical trials over the past ten years, plus existing nationally recognized treatment guidelines from the leading specialty societies.

The heart of each Work Loss Data Institute guideline is the Procedure Summary (see the original guideline document), which provides a concise synopsis of effectiveness, if any, of each treatment method based on existing medical evidence. Each summary and subsequent recommendation is hyper-linked into the studies on which they are based, in abstract form, which have been ranked, highlighted and indexed.

These guidelines unite evidence-based protocols for medical treatment with normative expectations for disability duration. They also bridge the interests of the many professional groups involved in diagnosing and treating work-related stress, major depressive disorder, and other mental disorders.

• From a clinical point of view the analysis of antidepressants' safety profile (adverse effect and suicide risk) remains of crucial importance and more reliable data about these outcomes are needed.
• First-generation selective serotonin reuptake inhibitors (SSRIs) often produce multiple side effects that many patients find intolerable, and the risk for harm when taken in overdose or in combination with certain medications is high.
• The risk of suicidal behavior after starting antidepressant treatment is similar among users of amitriptyline (a tricyclic) and fluoxetine (an SSRI).
• Despite the relative low prevalence of side effects associated with SSRIs a significant minority of older people find these drugs intolerable and experience nausea, vomiting, dizziness and drowsiness.
• Postmarketing reports of hepatic injury (including hepatitis and cholestatic jaundice) suggest that patients with preexisting liver disease who take duloxetine may have an increased risk for further liver damage. The new labeling extends the precaution against using Cymbalta in patients with substantial alcohol use to include those patients with chronic liver disease. It is recommended that Cymbalta not be administered to patients with any hepatic insufficiency.
• Hypomania as a potential adverse effect of light therapy needs to be considered.

• The following are current suggested exclusionary criteria for the use of an implantable pain treatment: (a) Active psychosis; (b) Active suicidal ideation; (c) Active homicidal ideation; (d) Untreated or poorly treated major depression or major mood disturbance. Depression in and of itself in reaction to chronic pain does not disqualify a patient from implantable treatment, although moderately severe to severe depression should be treated prior to trial. Anxiety/panic disorder should also be stabilized; (e) Somatization disorder or other somatoform disorder involving multiple bodily complaints that are unexplained or exceed that could be explained by the physical exam; (f) Alcohol or drug dependence (including drug-seeking behavior and/or uncontrolled escalated use); (g) Lack of appropriate social support; (h) Neurobehavioral cognitive deficits that compromise reasoning, judgment and memory.
• Other "red flags" include: a) unusual pain ratings (for example, the pain rating never changes from 9-10); b) unstable personality and interpersonal function; c) non-physiological signs reported on physical exam; d) unresolved compensation and litigation issues.

• The Treatment Planning section outlines an ideal approach. It will often not be possible to obtain an ideal approach from the involved clinicians. Refer to the "Procedure Summaries" in the original guideline document for a continually expanding and updated list of the various services that may be available, along with links to the scientific evidence.
• The definition of major depressive disorder is a highly summarized definition that is not intended to provide a full understanding of major depressive disorder. It is instead simply intended to provide readers with a simple overview.
• The essential core of the diagnostic evaluation is the protocol provided in the American Psychiatric Association's diagnostic manual. The examples of issues from that protocol provided in the guideline are not intended to serve as a substitute for the full protocol. These examples are only being provided in order to give readers some idea of what the protocol involves, and to at least partially convey the complex nature of the protocol.

An implementation strategy was not provided.

Getting Better
Living with Illness

Effectiveness
Patient-centeredness

• Work Loss Data Institute. Mental illness. Corpus Christi (TX): Work Loss Data Institute; 2008. 180 p. [231 references]

Not applicable: The guideline was not adapted from another source.

2004 (revised 2008 May 30)

Work Loss Data Institute - Public For Profit Organization

Not stated

Not stated

There are no conflicts of interest among the guideline development members.

This is the current release of the guideline.

This guideline updates a previous version: Work Loss Data Institute. Stress related conditions and other mental disorders. Corpus Christi (TX): Work Loss Data Institute; 2007 Apr 12. 153 p.

The Official Disability Guidelines product line, including ODG Treatment in Workers Comp, is updated annually, as it has been since the first release in 1996.

This NGC summary was completed by ECRI on April 4, 2005. This summary was updated by ECRI on August 15, 2005, following the U.S. Food and Drug Administration advisory on antidepressant medications. This summary was updated by ECRI on October 20, 2005, following the U.S. Food and Drug Administration advisory on Cymbalta (duloxetine hydrochloride). This NGC summary was updated by ECRI on January 30, 2006, November 13, 2006, April 2, 2007, and August 29, 2007. This summary was updated by ECRI Institute on October 31, 2007, following the U.S. Food and Drug Administration advisory on Antidepressant drugs. This NGC summary was updated by ECRI Institute on January 28, 2009.

This NGC summary is based on the original guideline, which is subject to the guideline developer's copyright restrictions.