Medical evidence
Does a pre-existing condition prevent an injury claim?
An earlier health problem does not automatically exclude compensation. Distinguish your previous baseline from changes after the accident.
Explain the baseline before the accident
Were you working normal hours, receiving treatment or already needing help? An earlier diagnosis may have had little practical impact, while apparently mild symptoms may have limited some activities. Describe the actual position instead of assuming that the diagnosis tells the whole story.
Relevant records can help distinguish a new injury, an aggravation and symptoms that would have continued anyway. Tell your adviser about earlier accidents or similar complaints rather than waiting for an insurer to discover them.
Timing is important but not everything
Symptoms appearing after an accident may support the timeline, but timing alone does not prove every claimed consequence. A medical assessment may need to consider the nature of the event, previous functioning and alternative explanations.
If the insurer treats an earlier problem as a complete answer, ask it to explain which loss it considers unrelated and why. A broad statement that you already had back pain is less informative than a reasoned analysis of the difference made by the accident.
Keep privacy requests focused
Relevant earlier medical information may be necessary, but that does not automatically justify unrestricted access to your whole history. Ask which period and conditions are relevant and who will review the records. Our medical authorisation guide explains practical questions about consent.
Do not omit relevant information because it seems inconvenient. Proportionate disclosure and complete honesty about relevant history should work together.
Consider the effect on the compensation calculation
An underlying vulnerability and an unrelated future health development can raise different questions. Their effect on the claim requires legal and medical assessment rather than an automatic percentage deduction.
If working capacity is affected, see future earning loss. Our personal injury support can help connect medical questions with the actual losses, including the distinction between assistance already needed and additional help required after the incident.
If symptoms changed after a vehicle collision, car accident legal support can discuss the accident evidence and medical timeline together. Explain the earlier condition and the change afterwards rather than treating the existence of a past complaint as the answer to the entire claim.
What to keep or ask for
- Records of relevant symptoms and treatment before the accident.
- Actual work and household capacity before and afterwards.
- A clear timeline of changes and new symptoms.
- The insurer’s reasons for any suggested deduction.
Questions you may still have
Will an old diagnosis automatically reduce compensation?
No. Its significance depends on the actual impact before the accident and the likely course without it. A diagnosis alone does not supply a financial deduction.
Should I conceal an earlier accident?
No. Explain relevant history accurately. Your adviser can help assess relevance and proportionality without withholding facts that materially affect the claim.
Sources and legal context
General information about Dutch personal injury claims. Some source material is in Dutch. Your circumstances may require a different assessment.
This guide explains general principles. It is not a decision on liability or the value of an individual claim.