Diagnosis is only the starting point.
Diagnosis and prognosis are connected, but they are not the same. Diagnosis identifies the condition. Prognosis explains its course.
A soft tissue neck injury, for example, does not automatically justify a standard recovery period. The expert should consider symptom severity, treatment response, previous history, current function, work demands and examination findings. The same applies to psychological injury, chronic pain and aggravation of degenerative conditions.
A diagnosis can guide the prognosis, but it should not replace individual analysis.
Start with the recovery so far.
The claimant’s actual progress should shape the prognosis.
Has the claimant improved since the accident? Are symptoms stable, fluctuating or worsening? Has treatment helped? Has the claimant returned to work or resumed normal activity?
A claimant who improves steadily over three months presents a different outlook from someone whose symptoms remain unchanged after a year. A claimant who completes rehabilitation without improvement may also require a different prognosis from someone who has not yet accessed treatment.
The expert should base the recovery period on the clinical course rather than simply apply a standard timeframe.
Separate accident-related symptoms from background conditions.
A claimant may have experienced back pain, neck pain, anxiety, depression, osteoarthritis or degenerative spinal changes before the accident. The accident may have caused a new injury, aggravated an existing problem or temporarily worsened an underlying condition.
If the expert believes the accident aggravated a pre-existing condition for six months, the report should say so. If natural degeneration more likely explains ongoing symptoms, the expert should make that distinction clear. Where the accident accelerated symptoms that would have developed later, the prognosis should address that possibility.
The parties need to know how long the accident-related element is likely to last, not simply how long the claimant may experience symptoms from any cause.
Function gives prognosis meaning.
A prognosis becomes more useful when it explains how symptoms affect daily life.
Pain levels alone do not always show disability. A claimant may continue to experience mild discomfort without meaningful restriction. Another may have moderate symptoms that prevent a return to manual work. Psychological symptoms may interfere with travel or employment even where the physical injury has improved.
The expert should consider work, mobility, domestic activity, sleep, exercise and caring responsibilities where relevant.
A statement that symptoms may continue for three months gives limited practical information. A stronger prognosis explains what the claimant is likely to manage during that period and whether restrictions should improve.
Treatment should form part of the reasoning.
Where further treatment may affect recovery, the expert should address it.
Physiotherapy, home exercises, medication review, pain management, psychological therapy or a phased return to work may influence the outcome. Experts should stay within their own field and avoid detailed recommendations outside their competence.
An orthopaedic expert may comment on musculoskeletal rehabilitation, while persistent psychological symptoms may require a psychiatrist or psychologist. Complex pain may require specialist evidence.
Delayed recovery needs analysis.
A claimant who has not recovered within the expected period requires closer consideration.
Delayed recovery may reflect injury severity, pre-existing vulnerability, chronic pain, poor sleep, psychological distress, fear avoidance, delayed rehabilitation, demanding work or unrelated health problems.
The expert should not assume that prolonged symptoms automatically prove continuing accident-related injury. Equally, delayed recovery should not be dismissed simply because it exceeds an average recovery period.
The question is whether ongoing symptoms remain medically plausible and whether the accident still provides a reasonable explanation. Where the evidence remains uncertain, the prognosis should say so.
Psychological factors may change recovery.
Psychological symptoms can affect recovery even when the original injury was physical.
Anxiety, low mood, pain-related distress, fear of movement, poor sleep, travel anxiety and reduced confidence can prolong symptoms or restrict function. In some cases, these factors may contribute more to disability than the original physical injury.
The expert should recognise their effect without diagnosing outside their expertise. Significant or persistent symptoms may justify separate psychiatric or psychological evidence.
Uncertainty should be clear.
Recovery may depend on further treatment, investigations, surgery, rehabilitation, psychological therapy or the natural course of a pre-existing condition. Missing records or incomplete treatment notes may also limit the opinion.
The expert should acknowledge those limitations rather than create false precision.
If symptoms are expected to resolve within a further period, the report should explain why. Clinical findings, treatment response, function and previous history should support the time limit.
A recovery date without reasoning remains vulnerable. A reasoned period helps the parties understand the evidence and may assist settlement.
Permanent symptoms need particular care.
The expert should consider how long symptoms have persisted, what treatment has already been tried, whether the condition has stabilised and whether further intervention could improve the position.
Where pre-existing degeneration or vulnerability exists, the expert must separate permanent accident-related effects from the natural progression of the underlying condition.
A claimant may have permanent symptoms without the accident causing all of them.
The prognosis is the endpoint of the analysis.
It explains the recovery already achieved, the duration of accident-related symptoms, the expected effect on function, the role of further treatment and remaining uncertainty. It should also identify when another expert or further evidence is needed.
The expert does not need to predict the future with certainty. The expert needs to explain what recovery is likely, why that opinion is reasonable and what could change it. And easier to defend.
