The consequences of a brain injury are not always apparent in a photograph, a short conversation or a brief return to a familiar activity. Difficulties with concentration, memory, planning, fatigue or emotional regulation may affect daily life even when someone looks physically recovered. Those experiences require appropriate clinical assessment; a symptom list or family observation cannot by itself establish a diagnosis or prove that an accident caused every reported change.
For a personal injury claim in England and Wales, the evidence should show the person's function before and after the event, the context of the changes and the relevant medical assessment. Specific examples are more useful than labels such as “not the same person”. The aim is an accurate account that supports care and legal assessment without turning ordinary variation or unrelated problems into assumed injury consequences.
This guide explains how to preserve that evidence and provides a functional change diary. It is not a diagnostic tool. New or worsening health concerns should be discussed with appropriate medical services, and urgent concerns should not wait for a solicitor or diary review.
Daily function changes: look beyond appearance
Describe the task and what changed
A person may hold a conversation yet struggle to organise several appointments, manage a complex work task or follow competing instructions. Record the actual activity, what happened and what assistance was needed. Avoid assuming the cause from the observation alone.
For example, “missed two appointments despite calendar reminders” describes an event. “The injury has permanently destroyed memory” asserts a medical conclusion. The first can help an expert investigate; the second may go beyond what the evidence supports.
The Cambridge University Hospitals information on acquired brain injury explains that effects can include cognitive, emotional and physical changes. Individual assessment remains essential. The claim record should connect the relevant clinical findings with the person's actual circumstances rather than copying a general symptom catalogue.
Compare equivalent activities
A before-and-after comparison is strongest when it concerns the same or a genuinely comparable task. If work duties changed, explain that. A person who previously managed a quiet routine and now faces a much more demanding role cannot attribute every new difficulty to the injury without considering the difference.
Use evidence such as earlier job responsibilities, study records, household routines and accounts from people who knew the person well. Do not create an idealised baseline in which there were no mistakes, stress or health problems before the event.
A realistic baseline can still show a substantial injury-related change. Acknowledging previous difficulties does not automatically defeat a claim. It allows the appropriate experts to consider whether the accident caused a new problem, aggravated an existing one or had a different effect.
Record effort and sustainability
Completing an activity once does not necessarily show that it can be repeated reliably across a day or week. Note the preparation, prompting, breaks, assistance and consequences afterwards. These details may be relevant to an assessment of work, study or independent living.
Equally, a difficult episode should not become the description of every occasion. Record successful tasks and better days. A balanced diary can show variability and the conditions under which the person functions more effectively.
Do not test capacity by deliberately overloading the person. Evidence should arise from appropriate ordinary activity and professional assessment, not from unsafe experiments or pressure to demonstrate impairment. The clinical team should advise on rehabilitation and assessment methods.
Contemporaneous examples: make observations usable
Keep short, dated entries
An entry should identify the date, activity, observation, support and outcome. It need not be a long narrative. The most useful detail is often the point at which the task became difficult and what changed when support was provided.
If an entry is written later, state when it was reconstructed and what supports it. Messages, appointment records or work correspondence may help establish dates. Do not present a retrospective account as though it was recorded during the event.
Keep the language descriptive. “Asked for the instruction to be repeated three times” is more informative than “was impossible”. Avoid insulting or moralising terms. The diary may eventually be read by the injured person, clinicians and legal advisers, and should preserve dignity as well as evidence.
Distinguish the observer's role
The injured person's account, a partner's observation and an employer's record provide different perspectives. Attribute each one. A family member should not state as personal knowledge what they heard from a colleague, and a claimant should not claim to remember an event they know only from another person's account.
Where memories differ, preserve the difference and ask the solicitor how to address it. Disagreement can reflect different vantage points or definitions rather than dishonesty. A forced single narrative may conceal information an expert needs.
Ask observers to provide their own examples before they read a detailed account prepared by someone else. This can help preserve independent recollection. Do not coach relatives to use diagnostic terminology or particular phrases thought likely to increase compensation.
Capture the setting
Noise, interruptions, travel, unfamiliar environments and task complexity can affect the context of an observation. Record relevant conditions without assuming they explain the problem medically. The expert can assess their significance alongside the clinical history.
For a work example, note whether the person was completing a familiar task, responding to multiple requests or dealing with a new system. For a home example, describe what assistance was normally available. A task performed with extensive support is different from the same task performed independently.
Context also helps avoid unfair conclusions from photographs or social media. A successful outing may involve planning, help and a limited duration that the image does not show. Preserve accurate context rather than deleting or concealing material that seems inconsistent with the claim.
Neuropsychological evidence: understand the purpose
Testing is part of a wider assessment
A neuropsychological assessment may help examine cognitive function and its implications, where appropriate. The need for that assessment, its scope and interpretation are matters for suitably qualified professionals. A single score should not be treated as a complete account of the person's life or a direct compensation value.
The expert may consider records, history, performance and other evidence. Provide relevant previous health, education, work and language information so the assessment has a reliable context. Do not conceal factors you fear may complicate the claim.
For legal preparation, read Preparing for an Independent Medical Examination. The purpose is to give an accurate account and understand practical arrangements, not to rehearse answers or learn how to perform in a particular way on testing.
Avoid coaching and online practice
Do not search for test answers, practise material intended to influence the result or ask the person to exaggerate mistakes. Such conduct can undermine the assessment and the claim. If the person is anxious about what will happen, ask the provider for an appropriate explanation of the process.
Explain genuine access needs in advance. Communication support, language requirements, fatigue or scheduling concerns may require arrangements. The professional should determine how these are accommodated and documented without compromising the assessment.
During the appointment, give the best honest effort and follow the assessor's instructions. If something is not understood or a problem occurs, say so. Do not guess what result would be legally advantageous; accurate evidence is the objective.
Read conclusions with their limitations
An expert report may distinguish diagnosis, causation, prognosis and functional implications. Those are related but separate questions. Ask the solicitor which conclusions are established, which remain qualified and whether further evidence is needed.
If a report identifies a factual error, provide the correction and supporting record. Disagreement with a professional interpretation should be raised through the proper process. Do not alter the report or circulate selected passages in a way that changes its meaning.
In litigation, expert evidence is subject to the requirements of CPR Part 35. An expert's role is to assist the court within their expertise, not simply to endorse the account most favourable to the person instructing them. A careful opinion may contain uncertainty and alternative explanations.
Family observations: useful evidence without taking over
Describe changes over time
Relatives may notice difficulties that do not appear during a short clinical appointment. Ask for examples from different periods, including early recovery and the current position. A change that improved should not remain described as permanent merely because it was dramatic initially.
Record how often the observer sees the person and in what circumstances. A relative who visits monthly has a different perspective from someone sharing daily routines. Neither account is automatically superior; the context determines what each can establish.
Avoid broad personality judgments. Describe the event and its effect: an unfamiliar reaction during a conversation, difficulty changing plans or a task abandoned after interruption. Whether those observations reflect the injury requires professional assessment rather than family diagnosis.
Preserve the person's own voice
The injured person may understand their difficulties differently from relatives. Their account should not disappear because another person is more confident or articulate. Ask what support helps them communicate and participate.
A family member can assist with dates or records while making clear which details come from them. During legal meetings, agree whether the person wants the helper present and what information can be shared. Do not assume that the relationship alone gives authority to make decisions or receive all confidential material.
If there is a concern about capacity for a particular legal decision, raise it with the solicitor. The GOV.UK guidance on assessing mental capacity emphasises the decision and time in question. A diagnosis, unusual choice or communication difficulty does not by itself establish inability to decide.
Recognise the effect on helpers
Relatives may take over organising appointments, managing correspondence or providing reminders. Record the actual additional tasks and their duration where relevant. Do not assume all time spent together is care or that every family disagreement is evidence of injury-related need.
The helper's availability and wellbeing also matter for practical planning. An arrangement that works temporarily may not be sustainable. Discuss support with the appropriate services rather than treating a compensation claim as the only route to assistance.
Where formal authority is needed, Acting for an Injured Adult Who Lacks Capacity addresses a separate legal issue. The factual evidence diary should not be used to confer authority informally on a relative.
The functional change diary
Choose a manageable period and an identified question. A diary designed to understand appointment management may look different from one addressing work endurance. Avoid recording every minor lapse without context; ordinary errors occur in everyone's life.
| Field | What to record | Why it matters |
|---|---|---|
| Activity | The specific task attempted | Avoids vague descriptions of general incapacity |
| Previous routine | How comparable tasks were managed before | Supports a realistic baseline |
| Setting | Relevant demands, interruptions or support | Explains the circumstances of the observation |
| Observation | What actually happened | Separates fact from diagnosis |
| Assistance | Prompting, practical help or adaptation | Shows the conditions under which the task was completed |
| Duration and aftermath | Time involved and relevant later effects | Helps assess sustainability rather than one-off ability |
| Source | Person recording and any supporting document | Preserves attribution and traceability |
| Uncertainty | What is not remembered or not established | Prevents false precision and unsupported causation |
A sample entry structure
Date: __. Recorded by: _. Date of recording: . Task and purpose: . Relevant conditions: . What happened: . Help used: . Outcome: . Comparable pre-injury routine: . Supporting record: . Question for the clinician or solicitor: ___.
Do not fill the final question with a diagnosis you want confirmed. Use it to identify an unresolved issue, such as whether further assessment is needed to understand repeated difficulty with a particular activity. The diary should support enquiry, not predetermine the answer.
Review entries for balance and privacy. Remove unnecessary identifying details about unrelated people from copies shared for initial advice, while preserving originals. Ask the solicitor how relevant sensitive material should be transferred securely.
Summarise patterns without erasing exceptions
After a defined period, write a short summary of recurring difficulties, successful strategies and changes. Keep the underlying entries. A summary should not transform a few episodes into an assertion that the problem occurs continuously.
If a pattern appears linked to a particular context, describe the observation cautiously. The clinician can consider whether it is significant. Do not self-diagnose a mechanism or change treatment based on the diary.
A useful summary also identifies what the record cannot show. It may lack a reliable pre-injury comparison or cover only a short period. Stating those limits helps the expert use it appropriately and prevents the solicitor from overstating its evidential weight.
Work, study and everyday administration
Obtain the actual demands
A job title does not reveal how much planning, multitasking, memory or sustained attention the role requires. Preserve a duty description, typical schedule and examples of responsibilities, subject to confidentiality. Do not copy employer or client information unlawfully.
Record adjustments, supervision and changed expectations. A person may remain employed because colleagues provide substantial support or duties have been modified. That can be valuable progress while still being relevant to future work assessment.
Conversely, difficulties at work may have several causes, including organisational change or unrelated stress. Provide the complete context. The legal assessment should not assume that every performance issue after the accident is attributable to brain injury.
Distinguish attendance from performance
Being present at work or college does not necessarily establish that the person can meet the previous demands. Relevant evidence may include actual hours, tasks completed, breaks, assistance and feedback. Keep formal records and your own factual account separate.
A phased return or trial period should be described accurately. If full pay continues temporarily, the financial record may differ from the functional position. The solicitor needs both to assess losses without treating one as proof of the other.
Do not remain off work or avoid appropriate activity to preserve a claim. Decisions about participation should follow suitable clinical and practical advice. Accurate evidence of an attempted return can be more informative than an assumption about what might happen.
Everyday administration can reveal support needs
Managing bills, appointments, travel plans or forms may involve several steps that are difficult to see from a short conversation. Record the assistance actually provided and the consequences of errors where relevant. Preserve documents showing missed appointments or duplicated payments without exaggerating their significance.
Financial mistakes require practical attention as well as evidence preservation. Ask appropriate advisers about support and safeguards. Do not assume a relative may take control of accounts without the necessary authority simply because mistakes have occurred.
The aim is to support the person while establishing the facts. A legal claim should not leave preventable practical problems unaddressed merely because documenting them might add evidence.
Causation and other possible explanations
The timing matters but does not decide the cause
A change noticed after an accident is important, but chronology alone does not answer every medical or legal question. The experts may need to consider the injury, earlier history, medication, sleep, psychological factors and other conditions. Provide the information honestly rather than selecting only facts that support one explanation.
An earlier vulnerability does not automatically exclude a claim. The question may concern a new injury, an aggravation or another legally relevant consequence. The appropriate comparison and causation analysis depend on the evidence.
Do not diagnose psychological distress as brain damage, or assume that a psychological explanation means symptoms are unreal. Different conditions can require different assessment and support. Psychological Harm After an Accident explains the separate evidence task without treating clinical categories as interchangeable.
Preserve earlier records fairly
Relevant pre-accident records can help establish the baseline and identify previous difficulties. Tell the solicitor about earlier treatment, learning needs, mental health concerns or head injuries. The request for records should be handled through appropriate legal and privacy processes.
If an old record appears inaccurate, explain the issue and supporting context. Do not conceal it or assume the solicitor can remove unfavourable material from the case. The record's meaning can be assessed only if the advisers know it exists.
A balanced history also includes strengths and established achievements. The purpose is not to reduce the person to a list of vulnerabilities. It is to understand the actual additional change attributable to the event under investigation.
Avoid conclusions from one image or encounter
A person may appear well during a short meeting, social occasion or online video. That observation is relevant only within its limits. It does not automatically establish sustained function across different tasks, and it does not automatically contradict a properly qualified account of difficulty.
Equally, do not dismiss contrary evidence without examining it. If an activity appears inconsistent with a statement, review the wording and context with the solicitor. The claim may need correction or clarification.
Preserve original material and avoid deleting posts or altering records to manage appearances. A truthful account should explain the activity, assistance and variability. Concealment can create a more serious problem than an image of genuine progress.
Communication and decision support in the claim
Ask for meetings at a suitable time and in a format the person can manage. Shorter sessions, written agendas, breaks and follow-up summaries may help, depending on individual needs. The person should not have to perform at their worst to demonstrate difficulty.
Confirm understanding without relying solely on a polite agreement. The solicitor should explain the actual decision, alternatives and consequences in an accessible way. A relative may support communication but should not answer every question automatically when the injured person can participate.
Capacity is decision-specific, and the legal framework must be applied properly. Concerns about managing a complex settlement are not necessarily the same as concerns about everyday choices. Obtain the appropriate assessment and advice rather than treating a family diary as a legal capacity determination.
Keep a record of agreed communication arrangements. This can reduce missed deadlines and repeated explanations. It should also identify who may receive correspondence and what authority or consent supports that arrangement.
Three hypothetical evidence problems
A familiar conversation conceals planning difficulties
Imagine a person who chats comfortably during a short appointment but repeatedly struggles to organise a sequence of unfamiliar tasks at home. A relative initially describes this as a complete loss of independence. That label is too broad to help assessment.
The diary instead records specific tasks, the points of difficulty and the prompts that helped. It also records familiar activities completed independently. The clinician receives a more accurate picture, and the legal adviser can identify the questions requiring specialist evidence.
The example does not establish that the difficulties are caused by brain injury. It shows how observations can be useful without converting them into an unsupported diagnosis or an absolute description of incapacity.
A return to employment with hidden support
A second person returns under the same job title, but colleagues check complex work and the employer reduces simultaneous demands. Payslips show normal earnings during a temporary arrangement. The claimant worries that returning has ended the claim.
The evidence distinguishes attendance, pay and functional support. The employer's agreed adjustments and review dates are preserved, along with actual duties. Appropriate experts can consider what the arrangement means for sustainable work.
This is not a reason to avoid employment. It is a reason to describe the return accurately. A successful supported arrangement and full recovery are different propositions, while a temporary difficulty does not automatically prove permanent disadvantage.
Family disagreement about change
A third person's partner notices daily difficulties, while a sibling who visits occasionally sees little difference. Rather than forcing agreement, each records their own observations and frequency of contact. The partner also acknowledges activities the person still manages well.
The expert can assess the different settings and evidence. The disagreement may reflect context, or it may reveal an assumption that needs checking. Either way, preserving independent accounts is more useful than coaching everyone into the same language.
The injured person's perspective remains part of the assessment. Support should help them express it, not replace it with a family narrative solely because others are more comfortable discussing the claim.
Build a chronology that different professionals can use
A concise chronology helps connect the event, early symptoms, consultations, rehabilitation and later functional changes. Use separate columns for date, event, source and unresolved question. This avoids turning the chronology into an argument that every development must have the same cause. The clinician can examine the medical sequence while the solicitor considers the legal significance.
Include periods when there is little information. A gap in treatment records may reflect improvement, difficulty accessing care, a missed appointment or another reason. Explain what you know without inventing a reason to make the history appear more consistent. If the explanation is uncertain, label it as such and identify any records that may clarify it.
Keep reported symptoms separate from professional findings. An appointment note may record what you said without confirming a diagnosis. A later report may reach a conclusion after further investigation. Both can be relevant, but they should not be described as identical evidence. Accurate source labels make the chronology more useful and reduce misunderstandings when several experts review the file.
Update changes that affect the legal discussion
Tell the solicitor when work duties change, a new assessment occurs, support increases or a previous difficulty improves. A report prepared months earlier may need an update before a major decision. Do not assume that the adviser knows about clinical developments simply because another professional has recorded them.
At each update, identify the practical question: whether further evidence is needed, whether a statement requires correction or whether an upcoming settlement discussion should use revised assumptions. This keeps the claim aligned with the person's actual circumstances. It also reduces the risk that an accurate early account becomes misleading through failure to acknowledge later progress or change.
Prepare a focused enquiry about less visible effects
Organise the incident chronology, relevant medical records, a realistic baseline, a short functional diary and the names of potential observers. Identify what is known and what is only suspected. Include current work or study arrangements and any urgent legal deadline.
Do not wait for a perfect diary before obtaining advice about time limits. Medical investigation and legal protection are separate workstreams. An insurer's ongoing discussion or a pending appointment does not automatically protect the claim from a deadline.
The brain injury claims service page provides a route to enquire about legal assessment. Explain the decision you need help with and whether another solicitor is acting. AJS's work is privately funded and legal aid is not offered. Confirm the accepted scope, suitable expertise and fees before assuming responsibility for the case has transferred.
Frequently asked questions
1. Can a brain injury have effects that are not obvious to other people?
Yes, some effects may concern cognition, fatigue, emotion or daily organisation rather than visible physical impairment. Their presence and cause require appropriate clinical assessment. A short conversation or photograph may reveal little about sustained function. Record specific changes and seek suitable healthcare advice rather than diagnosing yourself from a general symptom list or assuming appearance settles the issue.
2. Does forgetfulness after an accident prove a brain injury claim?
No single symptom establishes diagnosis, causation or legal liability. Forgetfulness can have different explanations, and the relevant professionals need the history and context. Preserve examples, timing and earlier difficulties without exaggeration. A solicitor can assess the legal issues alongside medical evidence, but neither a diary entry nor a symptom checklist alone proves every part of the claim.
3. What makes a useful example for a functional diary?
Describe a specific task, what happened, relevant conditions, assistance and outcome. Include the observer and date, and explain whether the entry is contemporaneous or reconstructed. A comparison with a similar pre-injury activity can help. Avoid broad labels or diagnostic conclusions, and include successful activities so the record shows variability rather than only selected difficult moments.
4. Should a relative write the diary for me?
They can record their own observations or assist if appropriate, but authorship should be clear and your own account should remain visible. Distinguish what you remember from what someone told you. A relative should not replace your words with a more dramatic description or assume authority over the claim. Agree consent and communication arrangements with the relevant professionals.
5. Can a normal-looking social photograph undermine the claim?
Its significance depends on the claim's wording and the full context. One activity may not establish sustained function, but genuinely inconsistent evidence should be addressed honestly. Preserve the original material and explain assistance, duration and circumstances where relevant. Do not delete posts or manipulate records to conceal progress or create an appearance that fits a preferred narrative.
6. What does a neuropsychological assessment add?
Where appropriate, it can help assess aspects of cognitive function and their implications within a wider clinical and factual picture. The qualified professional determines the suitable assessment and interprets results. A score is not a direct measure of compensation or the whole person's ability. Provide accurate history and discuss genuine access needs rather than trying to influence performance.
7. Should I practise tests before an expert appointment?
Do not practise material to obtain a particular assessment result or search for answers intended to influence testing. If you are anxious, ask the provider for an appropriate explanation of the process. Give honest effort and raise genuine difficulties during the appointment. Reliable evidence depends on accurate assessment, not on performing better or worse for perceived legal advantage.
8. What if I had concentration problems before the accident?
Tell the solicitor and relevant clinicians. Earlier difficulties do not automatically exclude a claim, but they are important to the baseline and causation assessment. Preserve records and explain the change you believe occurred. The question may concern an additional injury or worsening, and the appropriate experts need the complete history to evaluate that possibility reliably.
9. Does returning to work mean less visible symptoms have resolved?
Not necessarily. The actual duties, hours, assistance, adjustments and sustainability matter. Preserve the return plan and relevant feedback, and distinguish temporary pay arrangements from functional capacity. Equally, do not assume every workplace difficulty proves permanent impairment. Appropriate medical and employment evidence is needed to understand what the return demonstrates and what remains uncertain.
10. How should fatigue be recorded without exaggeration?
Describe the activity, duration, breaks, support and relevant effects afterwards, including days when the activity was manageable. Avoid assigning a medical cause yourself or using one difficult day as the description of every day. The diary should help a clinician understand the pattern. Do not deliberately overexert yourself to demonstrate difficulty or depart from appropriate healthcare advice.
11. What if family members disagree about the change?
Preserve their separate observations and explain how often and in what settings each sees you. Different accounts may reflect context or reveal an issue requiring assessment. Do not coach everyone into identical wording. A balanced record includes your own perspective and allows the expert to consider the disagreement rather than hiding it behind a single family statement.
12. Can psychological distress and brain injury evidence overlap?
They can raise related questions, but clinical categories and causes should not be assumed interchangeable. Appropriate professionals may need to consider several explanations and their interaction. Symptoms should be taken seriously without self-diagnosis. Give a full history of treatment and circumstances, and let the legal adviser identify the expert questions needed for the particular claim.
13. Does a brain injury diagnosis mean I lack capacity to instruct a solicitor?
No diagnosis automatically determines capacity for a particular decision. The relevant legal framework considers the decision, time and appropriate support. Raise any difficulties understanding or weighing advice so the solicitor can take suitable steps. A family member's concern is important information, but it is not itself a legal assessment or authority to settle on your behalf.
14. Can I ask for shorter legal meetings?
Yes, explain what helps you participate and ask for suitable arrangements, such as an agenda, breaks or written follow-up. The firm should understand the practical difficulty and consider an appropriate format. Support is intended to improve communication, not to manufacture evidence of impairment. Agree who may attend and receive information, with consent or authority properly addressed.
15. What if an expert report misstates my job or daily routine?
Identify the exact factual error and provide supporting information, such as the actual duty description or agreed adjustments. Raise it through your solicitor rather than editing the report. A factual correction differs from disagreement with a professional opinion. If circumstances changed after assessment, explain the date and nature of the development so an appropriate update can be considered.
16. Should I include mistakes involving money or appointments?
Include relevant examples with context and supporting documents, while protecting sensitive information. Explain what assistance was needed and whether similar problems existed before. Practical safeguards or support may also be necessary; do not leave avoidable harm unaddressed to collect evidence. A relative should obtain appropriate advice before taking control of finances or making decisions without the required authority.
17. Can I reconstruct the early recovery period later?
Yes, but identify it as a reconstruction and state the sources and uncertainties. Hospital dates, messages, calendars and independent recollections may assist. Do not invent precise daily events or imply notes were written contemporaneously. A transparent account of the general pattern is more reliable than detailed entries that nobody can genuinely remember or corroborate.
18. How much diary detail is enough?
The appropriate amount depends on the question being assessed. A focused record over a defined period can be more useful than a lengthy catalogue of every minor lapse. Ask the clinician or solicitor what information would help. Summarise patterns while retaining underlying entries, and avoid letting evidence collection become an excessive burden or a substitute for appropriate treatment.
19. Should I wait for a diagnosis before asking about legal deadlines?
No. Obtain legal advice promptly if a claim may arise, even while medical investigation continues. Time-limit assessment and clinical diagnosis are different tasks, and the applicable rules depend on the circumstances. Tell the solicitor what is known, what remains under investigation and the relevant dates. Do not assume an ongoing appointment process or insurer discussion stops time running.
20. What should a first brain injury enquiry contain?
Provide the event date, available medical information, a short description of functional changes, current support and work arrangements, and any legal correspondence or deadline. Distinguish established findings from concerns awaiting assessment. Explain existing representation and communication needs. Ask for confirmation of accepted instructions, suitable expertise and fees before relying on the firm to protect the claim or arrange expert evidence.
