top of page
Search

Beyond the Diagnosis: The Role of Psychological IMEs in Personal Injury Cases

Aug 8
6 min read

Updated: Aug 10

When a Personal Injury Case Includes Psychological Harm, the Clinical Question Is Only the Beginning


In personal injury litigation, determining whether someone has depression, anxiety, PTSD, cognitive complaints, or another psychological condition is often relatively straightforward.


The more difficult—and legally meaningful—questions are:


What caused it?

Is the claimed psychological injury consistent with the accident or event at issue?

What was present beforehand?

Are there other plausible contributing factors?

How significantly has the condition affected functioning?

Is the treatment reasonable and related to the claimed injury?

What is the prognosis, and what future treatment may reasonably be necessary?


These are fundamentally different questions from those asked in ordinary clinical practice.


They are also where a well-conducted Independent Medical Evaluation (IME) can become particularly valuable to attorneys, insurers, courts, and other decision-makers.


My approach to personal injury IMEs is built around one central principle:


A useful forensic opinion should not simply tell the attorney what diagnoses are present. It should explain how the evidence supports—or does not support—the claimed relationship between the event, the psychological condition, and the resulting impairment.


An IME Is Not Therapy


One of the most important distinctions in forensic psychology is the difference between a treating provider and an independent evaluator.


A treating psychologist appropriately approaches a patient with the goal of helping that individual recover.


An IME psychologist has a different responsibility. My role is to answer a defined medicolegal question as objectively as possible. I approach each case without a predetermined conclusion. The retaining party does not determine my opinion—the evidence does. This means giving appropriate weight to information that supports the claimed psychological injury while applying the same scrutiny to evidence that may suggest preexisting conditions, alternative explanations, inconsistencies, or limitations in what can reasonably be concluded.


I believe this independence is essential to credible forensic work. My responsibility is not to build a case for one side; it is to provide an opinion that I can support regardless of which side retained me.


For attorneys, that distinction matters. An expert opinion is ultimately most valuable when it is objective, transparent, well-reasoned, and capable of withstanding scrutiny—whether the conclusions are favorable to the retaining party, unfavorable, or somewhere in between.


Personal Injury Cases Rarely Have a Simple Psychological Story


Consider an individual who develops significant anxiety after a motor vehicle accident.


At first glance, the conclusion may seem obvious:


Accident → Anxiety


But a forensic evaluation has to look deeper. Perhaps the individual had an anxiety disorder years before the accident. Perhaps they had previous trauma but were functioning well before the incident. Perhaps the accident substantially aggravated a previously manageable condition. Perhaps chronic pain and loss of employment became more psychologically consequential than the accident itself. Perhaps sleep disruption, medication effects, financial stress, relationship problems, or another medical condition contributed to the current presentation.


Or perhaps the available evidence strongly supports the accident as the primary precipitating event.


The evaluator's job is not to assume any of these explanations. It is to investigate them.


Causation Is Where Psychological Assessment Becomes Medicolegal Assessment


This distinction is critical. A diagnosis describes a condition. A forensic opinion attempts to explain its relationship to the legal question. Someone can meet diagnostic criteria for PTSD without establishing that a particular accident caused the PTSD.


Similarly, the existence of a pre-existing psychological condition does not necessarily mean a subsequent event caused no additional harm.


Personal injury cases frequently require careful consideration of:


  • Preexisting conditions

  • New-onset symptoms

  • Exacerbation or aggravation

  • Alternative causes

  • Temporal relationships

  • Treatment history

  • Functional changes

  • Recovery trajectory


I therefore approach causation as a longitudinal question rather than simply asking how the examinee feels on the day of the evaluation.


One of the most informative comparisons is often:

Who was this person before the event, and how did functioning change afterward?


Records Matter


A strong IME should rarely exist in an evidentiary vacuum. When available and relevant to the referral question, I may review materials such as:


  • Medical and behavioral-health records

  • Primary care records

  • Previous psychological or psychiatric treatment

  • Emergency and hospital records

  • Medication histories

  • Prior psychological testing

  • Employment or disability information

  • Depositions or other legal materials

  • Accident-related records

  • Relevant records predating the alleged injury


The goal is not simply to accumulate documents. The goal is to reconstruct the clinical timeline:


When did symptoms first appear?

Were similar symptoms documented previously?

Did functioning actually change?

Was treatment consistent with the reported severity?

Did symptoms improve, worsen, or remain unchanged?

Are there discrepancies between contemporaneous records and later reports?


Those questions often provide considerably more insight than a diagnostic label alone.


Psychological Testing Adds Another Layer of Evidence


Depending on the referral question, psychological testing may be an important component of a personal injury IME. Testing can help evaluate areas such as:


  • Emotional and personality functioning

  • Trauma-related symptoms

  • Depression and anxiety

  • Somatic concerns

  • Cognitive complaints

  • Response style

  • Symptom validity

  • Functional impairment


However, I do not believe that forensic assessment should become:


"The test says X, therefore my opinion is X."


Psychological tests are pieces of evidence. The strongest conclusions emerge when multiple independent sources converge:


Interview + records + testing + behavioral observations + collateral evidence


When those sources agree, confidence in an interpretation increases. When they disagree, the disagreement itself becomes something the evaluator needs to understand and explain.


Validity Assessment Is Essential—but It Requires Nuance


Personal injury evaluations often involve questions about whether reported symptoms accurately represent an individual's functioning.


This is a legitimate forensic question.


But there is an important distinction between identifying inconsistent or unusual responding and automatically concluding that someone is intentionally fabricating an injury.


Psychological test results can be affected by many factors, including psychiatric distress, misunderstanding, cognitive limitations, response style, and other circumstances.


For that reason, conclusions about validity should be based on patterns and converging evidence, not a single elevated score.


A good forensic report should explain what the data demonstrate, what they do not demonstrate, and how much confidence can reasonably be placed in the resulting opinion.


Psychological Injury Often Intersects With Physical Injury


One reason psychologists can add substantial value to personal injury cases is that physical and psychological functioning are deeply interconnected.


Chronic pain can affect:


  • Sleep

  • Mood

  • Concentration

  • Motivation

  • Relationships

  • Occupational functioning


Trauma can amplify physiological arousal and pain perception.


Sleep disruption can worsen mood and cognitive functioning.


Medication side effects can contribute to fatigue or cognitive complaints.


Loss of physical abilities can affect identity, independence, recreation, and relationships.


The question therefore isn't simply:


"Is this psychological or physical?"


Frequently, it is both.


Understanding that interaction is particularly important when evaluating claims involving chronic pain, trauma, cognitive complaints, disability, and long-term functional impairment.


My Psychopharmacology Training Adds Another Perspective


Medication histories can contain important information about a person's clinical course.

As a Prescribing Pychologist with advanced training in clinical psychopharmacology, I can evaluate psychological symptoms while also considering questions such as:


Does the medication regimen correspond with the reported diagnoses?

Could medication effects be contributing to fatigue, sleep disruption, anxiety, or cognitive complaints?

Does the treatment history provide information about severity or persistence?

Are multiple medications complicating the clinical picture?

Are medical and psychiatric factors interacting?


This does not replace the expertise of other medical specialists. Instead, it allows me to evaluate the psychological case with a broader understanding of the relationship between behavior, psychopathology, medications, sleep, cognition, and physical health.


Attorneys Need More Than a 40-Page Report


A technically impressive report has limited value if nobody can determine what the evaluator actually concluded. I believe forensic reports should be rigorous and readable.


The attorney should be able to identify:


What does the evidence show?

What does it not show?

What diagnoses are supported?

What alternative explanations were considered?

What is the relationship between the event and the psychological condition?

What functional impairment is supported?

What is the prognosis?

What treatment, if any, appears reasonably related to the claimed injury?


And most importantly:


How did the evaluator arrive at those conclusions?


The reasoning should be visible.


A Good Expert Should Be Willing to Say “Yes,” “No,” and “I Can't Determine That”


Credibility matters tremendously in forensic work. There will be cases in which the evidence strongly supports psychological injury related to the event. There will be cases in which significant psychological symptoms are present but causation is more complicated. There will be cases in which the evidence does not support the claimed relationship.


And sometimes the available evidence simply isn't sufficient to answer a question with reasonable confidence.


I believe an expert needs to be comfortable with all four possibilities. An opinion becomes more defensible when the evaluator is willing to acknowledge limitations rather than stretching the evidence toward the conclusion someone hoped to receive.


What I Bring to Personal Injury IMEs


My background allows me to approach these cases from several complementary perspectives.


I am a Licensed Psychologist with extensive experience conducting psychological and medicolegal evaluations across disability, VA, immigration, employment, and other forensic contexts. My clinical background includes psychological testing, trauma, complex differential diagnosis, and the evaluation of mood, anxiety, cognitive, and neurobehavioral concerns.


My additional graduate and fellowship training in clinical psychopharmacology provides another layer of expertise when cases involve complicated medication regimens, psychiatric treatment histories, sleep problems, medical comorbidities, or questions about how biological and psychological factors interact.


But perhaps most importantly, I approach forensic work as an exercise in clinical reasoning rather than advocacy.


I want the records, interview, testing, history, and behavioral evidence to tell the story.

Then my job is to explain that story clearly.

 
 
 

Recent Posts

See All

Comments


Contact

For any questions you have, you can reach Dr. Phan here:

Woman Conversing Calmly

Healing Grove Integrative Behavioral Medicine

5655 S Yosemite Street

Suite #201

Greenwood Village, CO 80111

dr.diemphan@integrativebhmed.com

720-203-6266

Thanks for submitting!

© 2026 Healing Grove Integrative Behavioral Medicine.

bottom of page