How a Symptom Diary Can Strengthen Your Long Term Disability Claim

If you are filing a long term disability claim, one of the most important issues is proving how your symptoms affect your ability to work. A diagnosis alone is usually not enough. Your insurer will want evidence showing that your condition prevents you from performing the duties of your occupation on a consistent basis.

One of the most effective ways to document your limitations is by keeping a detailed symptom diary. A well-maintained symptom journal can help support your credibility, strengthen your medical records, and provide important evidence for your long term disability claim. 

Why Symptoms Matter More Than a Diagnosis in a Long Term Disability Claim

What Is a Symptom Diary?

A symptom diary is a daily record of the physical, cognitive, and emotional symptoms you experience because of your medical condition.

In a long term disability claim, the purpose of the diary is to document how your symptoms affect your ability to function on a daily basis, including your ability to work, complete routine activities, maintain concentration, and sustain activity over time.

Many disabling conditions involve symptoms that can fluctuate from day to day or even hour to hour. Because of this, a symptom diary may help provide a more accurate picture of your condition than isolated medical appointments or brief conversations with your doctors. A well-maintained diary can help capture patterns that may otherwise be overlooked, such as worsening fatigue throughout the day, symptom flare-ups after physical or mental activity, medication side effects, or recurring cognitive difficulties.

Your diary may help demonstrate:

• • The frequency of your symptoms
  • The severity and duration of symptom flare-ups
  • How symptoms change over time
  • Activities that trigger or worsen symptoms
  • The need for rest breaks or periods of recovery
  • The impact of symptoms on your ability to work and perform daily activities

For example, your symptom journal may document issues such as chronic pain, migraines, dizziness, fatigue, brain fog, memory problems, anxiety, difficulty concentrating, or the inability to remain active for extended periods of time.

A symptom diary can be especially helpful in claims involving conditions with primarily subjective symptoms, where the severity of the condition may not always be fully reflected through imaging studies, laboratory tests, or other objective findings. In these cases, detailed documentation of your day-to-day functioning may provide important context for your treating physicians and your long term disability claim.

Because the diary is kept contemporaneously, meaning the entries are made as symptoms occur rather than reconstructed later from memory, it may also improve credibility and consistency throughout the disability claim process. In many cases, insurers closely evaluate whether a claimant’s reported symptoms remain consistent across medical records, physician reports, personal statements, and other supporting evidence.

What Should You Include in a Long Term Disability Symptom Diary?

A strong symptom diary should contain specific details rather than general statements.

Symptoms You Experienced

Your symptom diary should describe the symptoms you experienced each day as specifically as possible. In many long term disability claims, detailed symptom documentation can help demonstrate not only the existence of a medical condition, but also how frequently symptoms occur and how severely they affect your ability to function.

Depending on your condition, your symptoms may include migraine headaches, chronic fatigue, pain, dizziness, brain fog, nausea, anxiety, panic attacks, memory problems, cognitive difficulties, muscle weakness, sleep disturbances, or difficulty concentrating. Rather than simply listing symptoms, it is often more helpful to explain when the symptoms occurred, how severe they became, how long they lasted, and whether they interfered with daily activities or work-related tasks.

For example, instead of writing:

“Experienced fatigue.”

a more detailed entry may explain:

“Severe fatigue began around noon after attending a virtual meeting. Needed to lie down for several hours and could not complete basic household tasks afterward.”

Similarly, rather than simply writing:

“Had a migraine.”

you may describe:

“Migraine started at 10:00 a.m. with nausea and light sensitivity. Unable to tolerate computer screens or drive for the remainder of the day.”

In our experience, detailed symptom descriptions are often far more persuasive than broad or generalized statements because they provide important context regarding the real-world impact of your condition on daily functioning, concentration, stamina, and occupational activities.

Severity of Symptoms

It is important to describe not only what symptoms you experienced, but also how severe they were, how long they lasted, and how they affected your ability to function throughout the day.

Whenever possible, include details such as:

• • The intensity of the symptom
  • The duration of the episode
  • Whether the symptom improved or worsened over time
  • What activities were affected
  • Whether you needed to rest, lie down, or stop activities altogether

Many claimants also find it helpful to use a numerical severity scale, such as rating symptoms from 1 to 10, while also providing a written description for context.

For example:

“Fatigue level 8/10 by early afternoon. Needed to lie down for two hours after taking a shower and was unable to focus on emails afterward.”

Or:

“Severe migraine began at 9:00 a.m. and lasted until evening. Unable to tolerate light or screens.”

Detailed descriptions like these may help demonstrate the real-world impact of your condition and provide a clearer picture of how your symptoms interfere with daily functioning and work activities.

Functional Limitations

A strong symptom diary should do more than simply list your symptoms. It should explain how those symptoms affect your ability to function throughout the day. In many long term disability claims, functional limitations are one of the most important issues your insurer will evaluate because they help demonstrate whether you can reliably perform your occupational duties on a sustained basis.

For example, rather than writing only that you experienced fatigue, it is often more helpful to explain how the fatigue affected your activities and daily functioning. A detailed entry may describe needing to lie down after basic activities, struggling to concentrate long enough to complete tasks, or being unable to leave the house because of dizziness or pain.

Your diary should also describe how long limitations lasted and whether symptoms worsened with physical or mental activity. For instance, you may document difficulty sitting through meetings because of back pain, trouble using a computer because of migraines or numbness in your hands, or the inability to drive safely because of cognitive symptoms or medication side effects.

These types of details may help provide a clearer picture of how your condition affects your ability to work consistently and maintain normal daily activities. They may also provide important context for your treating physicians, medical records, and long term disability claim overall.

Impact on Your Job Duties

When possible, try to connect your symptoms directly to the specific duties of your occupation. In many long term disability claims, the central issue is not simply whether you have a medical condition, but whether your symptoms prevent you from performing the material duties of your job on a reliable and consistent basis.

A symptom diary can help demonstrate how your condition affects work-related tasks such as:

• • Concentrating or maintaining attention
  • Sitting or standing for extended periods
  • Meeting deadlines
  • Communicating with coworkers or clients
  • Using a computer
  • Driving or traveling for work
  • Remembering instructions or completing tasks accurately

For example:

“Could not focus long enough to complete accounting work or review spreadsheets.”

Or:

“Neck pain and numbness in hands worsened after 20 minutes of typing. Needed multiple breaks and could not complete reports.”

Another example:

“Experienced severe fatigue after attending a one-hour virtual meeting and needed to lie down for the remainder of the afternoon.”

These types of detailed descriptions may help demonstrate why your symptoms interfere with your ability to perform your occupation on a sustained basis.

This can be especially important in ERISA long term disability claims, where insurers often closely evaluate whether a claimant can reliably perform the duties of their own occupation or any occupation under the terms of the policy.

Why Specificity Improves Credibility

General statements such as “I felt bad today” are usually not very persuasive in a long term disability claim because they provide little information about the nature of the symptoms or how they affected your ability to function.

More specific descriptions are often far more credible because they allow your symptoms to be evaluated in context. A detailed symptom diary can help demonstrate patterns over time, including the frequency of flare-ups, the severity of symptoms, the impact of physical or mental activity, and the extent of your functional limitations.

For example, instead of writing:

“Pain was bad today.”

a more helpful entry may explain:

“Lower back pain increased to 8/10 after sitting for 30 minutes. Needed to lie down for the remainder of the afternoon and could not complete household tasks.”

Specific entries like these may help provide a clearer picture of how your condition affects your daily functioning and ability to work consistently. Detailed documentation can also become important if your claim is later reviewed during an appeal, an independent medical evaluation, or litigation.

Can a Symptom Diary Help an ERISA Disability Claim?

Yes. A symptom diary can be particularly helpful in an ERISA long term disability claim because the administrative record often plays a critical role in determining the outcome of the case. In many ERISA claims, there may be limited opportunities to introduce new evidence once litigation begins, which makes it important to develop strong supporting documentation as early as possible.

A detailed symptom journal may help support your treating physicians’ opinions, document functional limitations, and provide additional context regarding how your condition affects your ability to perform your occupational duties on a consistent basis. Symptom diaries may also help reinforce restrictions and limitations identified in medical records, Functional Capacity Evaluations, neuropsychological evaluation testing, or other supporting evidence.

In our experience, symptom journals are often especially useful in claims involving conditions with primarily subjective symptoms that may not always be fully reflected through objective testing alone. Examples may include migraines, fibromyalgia, chronic fatigue syndrome, Long COVID, chronic pain disorders, cognitive impairment, and certain mental health conditions.

For these types of conditions, a detailed diary may help document issues such as symptom flare-ups, post-exertional fatigue, difficulty concentrating, medication side effects, or the inability to sustain activity throughout a normal workday. Over time, consistent symptom documentation may help create a clearer picture of how your condition affects your day-to-day functioning and work capacity.

Bring Your Symptom Diary to Every Doctor Appointment

Common Mistakes to Avoid When Keeping a Symptom Diary

A symptom diary can be a valuable tool in supporting your long term disability claim, but certain mistakes may reduce its effectiveness. In our experience, the strongest symptom journals are consistent, specific, and focused on documenting how your condition affects your ability to function on a day-to-day basis. 

Being Inconsistent

One common mistake is only making entries on especially bad days. While it is understandable to focus on severe flare-ups, gaps in documentation can make it more difficult to demonstrate the ongoing nature of your condition.

Consistency is often important because your insurer may look for patterns over time rather than isolated incidents.

For example, instead of documenting symptoms only once every few weeks, it is usually more helpful to record at least brief entries on a regular basis, even on relatively better days.

Example:

“Fatigue level 5/10 this morning. Able to do light household tasks but needed to rest after 30 minutes of activity.”

Consistent entries may help demonstrate that your symptoms persist even when they fluctuate in severity.

Exaggerating Symptoms

Accuracy and honesty are critical when maintaining a symptom diary. Overstating symptoms or using overly dramatic language can sometimes undermine credibility if the diary is later compared with medical records, activity logs, or surveillance evidence.

A symptom journal is usually most persuasive when it provides an honest description of both limitations and occasional better days.

For example, instead of writing:

“Completely incapacitated every single day.”

A more credible entry may look like:

“Pain level increased to 8/10 this afternoon. Needed to lie down for several hours and could not complete errands.”

Specific and realistic descriptions are often more persuasive than broad or absolute statements.

Using Only Vague Descriptions

General statements without detail may not provide enough useful information to support your claim.

For example, entries such as:

“Felt terrible today.”

or:

“Symptoms were bad.”

do not explain how the symptoms affected your functioning.

More detailed entries are generally far more helpful.

Example:

“Experienced severe brain fog during the afternoon. Forgot passwords repeatedly and could not focus long enough to complete basic computer tasks.”

Specific descriptions can help demonstrate how your symptoms interfere with work-related activities and daily functioning.

Forgetting to Share the Diary With Doctors

A symptom diary may become more valuable when the information is discussed with your treating providers and reflected in your medical records.

If your doctors never see the diary, important symptoms or functional limitations may not appear in treatment notes. Insurance companies often closely review medical records when evaluating long term disability claims.

For example, if your diary consistently documents issues such as severe afternoon fatigue, difficulty concentrating, and/or medication side effects, but your medical records contain little mention of those issues, your insurer may argue that the symptoms are not as severe as claimed.

We often recommend bringing updated portions of your symptom journal to medical appointments so your doctors can review recent symptom patterns and limitations.

Practical Tips for Keeping an Effective Symptom Diary

Over the years, Riemer Hess LLC has reviewed many long term disability claims involving symptom journals. The most effective symptom diaries are usually the ones that are consistent, specific, and easy to follow.

Here are some practical strategies that may help strengthen your documentation.

Symptom Diaries Can Be Especially Helpful for Subjective Conditions

Riemer Hess has found that symptom diaries are often most helpful in long term disability claims involving conditions with primarily subjective symptoms. These are conditions where disabling symptoms may not always appear clearly on imaging studies, laboratory testing, or other objective diagnostic measures.

Examples may include:

• Chronic Fatigue Syndrome
• Fibromyalgia
• Migraine disorders
• Long COVID
• Chronic pain conditions
• Cognitive impairment
• Mental health conditions

In these types of claims, detailed symptom documentation may help demonstrate the real-world impact of the condition on your ability to function and work consistently. A well-maintained diary can also help show patterns over time, including symptom flare-ups, fatigue after activity, cognitive difficulties, and the frequency of bad days. This information may provide important context for your treating physicians, your medical records, and your long term disability claim overall.

For example, Riemer Hess represented a client suffering from Long Covid whose objective testing did not fully capture the severity of the condition. We advised our client to maintain a detailed symptom diary documenting ongoing fatigue, cognitive impairment, dizziness, and worsening symptoms after minimal physical or mental activity. The diary also tracked how these symptoms interfered with our client’s ability to sustain concentration, complete routine tasks, and maintain a normal work schedule. Ultimately, the symptom documentation helped support the overall medical evidence in the case, and the claim was approved.

Symptom journals can provide important context for treating physicians, medical records, and long term disability claims involving conditions that are often difficult to measure through objective testing alone.  

Choose a Symptom Diary Format That Is Easy to Maintain

There is no single “right” way to keep a symptom diary. The best format is usually the one that allows you to consistently and clearly document your symptoms over time.

Many people choose to maintain their symptom journals using Microsoft Excel or Google Sheets, a Word document, Notes applications on a phone or tablet, or in physical notebooks. In general, we often recommend that our clients use a typed format whenever possible rather than handwritten notes. Handwritten symptom diaries can sometimes create legibility issues, especially when they are later reviewed by doctors, attorneys, vocational experts, or your insurer.

Digital formats may also make it easier to organize entries chronologically, search for symptom patterns, update entries consistently, print records for doctor appointments, and share information with treating providers or legal counsel.

Regardless of the format you choose, consistency and specificity are usually more important than the platform itself.

Rate Symptoms Using a Number Scale

Using a consistent numerical scale can help show the severity and frequency of your symptoms over time.

For example, you might rate symptoms on a scale from 1 to 10:

• 1–3: Mild symptoms
• 4–6: Moderate symptoms
• 7–10: Severe symptoms

However, numbers alone are usually not enough. It is also important to describe the intensity of the symptoms in practical terms.

For example:

“Fatigue level 8/10. Needed to lie down twice during the afternoon and could not focus long enough to complete simple household tasks.”

Specific descriptions often provide more meaningful context than numerical ratings by themselves.

Record Symptoms at Multiple Times During the Day

Symptoms associated with many disabling conditions can fluctuate significantly throughout the day. Because of this, Riemer Hess often recommends our clients make symptom diary entries at different points during the day rather than recording only a single daily summary.

This type of tracking may help demonstrate how your condition changes over time and whether symptoms worsen after physical or mental activity. Many of our clients report that they may feel relatively functional earlier in the day but experience substantially increased fatigue, pain, dizziness, cognitive difficulties, or headaches later in the afternoon or evening.

For instance, a claimant with chronic fatigue syndrome may wake up feeling manageable symptoms, but after attending a medical appointment, performing household chores, or working on a computer for a short period of time, may later experience severe exhaustion or post-exertional symptom flare-ups that require extended rest.

Documenting these fluctuations can help provide a more accurate picture of your day-to-day functioning and may help demonstrate why sustaining full-time work activity is difficult. It may also provide important context regarding symptom persistence, recovery time, and the cumulative impact of activity throughout a normal workday.

Be Honest and Consistent

One of the most important aspects of maintaining a symptom diary is credibility. In long term disability claims, insurance companies often compare symptom journals against medical records, physician notes, activity levels, and other claim documentation when evaluating the severity of a condition.

For that reason, your diary should accurately reflect both good days and bad days. While it may be tempting to focus only on your worst symptoms, a balanced and truthful record is usually far more persuasive than one that appears exaggerated or overly dramatic.

For example, if you experienced moderate symptoms on a particular day but were still able to complete limited household activities, it is generally better to document that honestly rather than describing yourself as completely incapacitated. Similarly, if your symptoms temporarily improved for several hours or a day, documenting that improvement may actually strengthen your credibility by showing that your diary reflects real day-to-day fluctuations rather than one-sided reporting.

Consistency is also important. A symptom journal that regularly documents symptom severity, activity limitations, flare-ups, and recovery periods over time may help create a more reliable picture of how your condition affects your ability to function on a sustained basis.

Connect Symptoms to Daily Activities and Work Duties

Rather than simply listing your symptoms, try to explain how those symptoms affect your ability to function throughout the day and perform the duties of your occupation. In many long term disability claims, the key issue is whether your condition prevents you from working reliably and consistently, not merely whether you have been diagnosed with a medical condition.

For example, instead of writing:

“Experienced brain fog today.”

it is often more helpful to explain how the cognitive symptoms affected specific activities or work-related tasks.

A more detailed entry may look like:

“Had difficulty concentrating during a virtual meeting and forgot several discussion points shortly afterward. Could not focus long enough to complete reports by the end of the day.”

Similarly, a claimant experiencing chronic pain or fatigue may document difficulty sitting for extended periods, the need for unscheduled rest breaks, problems remembering instructions, difficulty typing or using a computer, or missing deadlines because of worsening symptoms during the day.

Connecting symptoms directly to occupational duties can help demonstrate why maintaining full-time work activity has become difficult. This type of documentation may be especially important in claims involving sedentary or cognitively demanding occupations, where issues such as fatigue, impaired concentration, memory problems, headaches, or medication side effects can substantially interfere with job performance even if the condition is not outwardly visible.

In our experience, symptom diaries are often most persuasive when they clearly show how symptoms translate into real-world functional limitations that affect both daily activities and the ability to sustain work on a regular basis.

Track Medication Side Effects

Many people pursuing long term disability benefits experience medication side effects that can significantly affect their ability to work safely and consistently. In some cases, the side effects of treatment may be nearly as limiting as the underlying medical condition itself.

When keeping a symptom diary, it can be helpful to document not only the medications you take, but also how those medications affect your daily functioning. Common side effects may include drowsiness, dizziness, brain fog, nausea, slowed thinking, fatigue, blurred vision, or memory problems.

For example, instead of writing:

“Medication caused fatigue.”

a more detailed entry may explain:

“Took prescribed pain medication at 10:00 a.m. Experienced dizziness and drowsiness within an hour and needed to lie down for most of the afternoon. Unable to concentrate on emails or safely drive.”

Medication side effects are often underreported in long term disability claims even though they may substantially interfere with occupational duties. At Riemer Hess, we've represented clients whose medications caused significant cognitive slowing, fatigue, or concentration problems that affected their ability to maintain work performance despite ongoing treatment compliance.

For example, one client being treated for chronic migraines maintained a symptom diary documenting persistent drowsiness and slowed thinking after taking prescribed medications. The diary showed repeated difficulties attending virtual meetings, responding to emails, and maintaining focus throughout the workday. Over time, the consistent documentation helped support the client’s reports of functional impairment and provided additional context for the treating physicians’ opinions regarding work limitations.

In many long term disability claims, documenting medication side effects can help provide a more complete picture of how your condition and treatment affect your ability to sustain reliable work activity on a day-to-day basis.

Speak With a Long Term Disability Lawyer About Your Claim

If your long term disability claim has been denied or you need help strengthening your evidence, an experienced disability attorney can help you understand what documentation may improve your case.

A symptom diary is only one part of a strong disability claim, but it can become valuable supporting evidence when used correctly.