A Car Accident Aggravated A Pre-Existing Condition, Can I Claim?

Updated 9th April 2026. Have you been involved in a car accident that was caused by another road user’s negligence? Has this accident aggravated a pre-existing condition? If so, you could be entitled to compensation for the suffering you have experienced. We can help you with road traffic accident claims.

When we think of injuries sustained in a car accident, our mind may automatically jump to things like cuts, bruising and broken bones. But if you already suffer from a condition that causes you pain and suffering, a car accident could make this worse.

If you’d like to learn more about a pre-existing injury aggravated by a car accident that wasn’t your fault, this guide can help. This page contains information about what kind of compensation you could be entitled to, the process of claiming, and how one of Advice’s solicitors can represent you on a No Win No Fee basis.

To reach our team of specialist advisors for a free consultation about your case, you can contact us using one of the three contact options below:

Select A Section

1. What Is A Pre-Existing Condition?
2. Can I Claim If A Car Accident Aggravated A Pre Existing Condition?
3. What Is The Time Limit For A Car Accident Claim?
4. Calculate Compensation For Aggravated Pre-Existing Conditions
5. Types Of Damages Which Could Be Awarded After A Car Accident
6. What Injuries Could Be Aggravated By A Car Accident?
7. I Did Not Suffer Any New Injuries, Could I Make A Claim?
8. Does The Eggshell Rule Apply To Aggravated Injury Claims?
9. Proving The Car Accident Aggravated A Pre-Existing Condition
10. Proving The Other Party’s Liability
11. What Are The Steps Of A Personal Injury Claim?
12. Claiming For Pre Existing Injuries Aggravated By A Car Accident With Our Solicitors
13. Claiming For An Aggravated Pre-Existing Condition On A No Win No Fee Basis
14. Related Services
15. FAQs About Claims With A Pre-Existing Condition

What Is A Pre-Existing Condition?

A pre-existing condition refers to an injury or health issue that you had before an accident occurred. Many different conditions could be exacerbated by a car accident. Examples include:

• Injuries you have suffered in the past (such as to your back)
• Musculoskeletal disorders
• Degenerative illnesses (such as multiple sclerosis)
• Mental health conditions (such as Post-Traumatic Stress Disorder or depression)

For example, you suffer from an autoimmune disease such as arthritis. Which, in turn, caused the condition to become worse due to a road traffic accident.

If you have any questions about pre-existing conditions, please contact our advisors. We understand that a car accident can leave you feeling distressed and vulnerable. Our advisors offer expert advice free of charge, so why not contact them to find out if you could proceed with a No Win No Fee solicitor? 

You do not have to use our services after enquiring, so you really have nothing to lose. A compensation payout could help you to recover from your injuries without the weight of your financial worries hanging over you. 

Can I Claim If A Car Accident Aggravated A Pre Existing Condition?

You can claim if a car accident aggravated a pre-existing condition, provided that you are able to prove that a third party’s negligent actions directly caused it to worsen or accelerate the development of symptoms. To have a valid claim for a car accident that aggravated a pre-existing condition, you must be able to show that:

• You were owed a duty of care – All road users owe one another a duty of care by using the roads in a safe manner to avoid injury. This duty also requires them to comply with the Road Traffic Act 1988 and the Highway Code.
• This duty of care was breached – The duty of care owed to you must have been breached in some capacity. For example, a motorist failing to stop at a red traffic light or a driver operating a car while being under the influence of alcohol. 
• The breach caused your pre-existing condition to worsen – This means that you must show that you experienced additional pain and suffering because of another road user’s breach of duty. For example, an old back injury you sustained while playing football becoming aggravated when you are rear-ended by a drink driver. You can also claim for any other harm you suffered in the collision, including whiplash and psychological trauma. 

We can assess the eligibility of your claim for free. Call us today to find out more.

What Is The Time Limit For A Car Accident Claim?

If you were in a car accident that aggravated a pre-existing condition, you will generally have a 3-year time period to get your claim started. This is in accordance with the Limitation Act 1980.

However, certain factors may change the way that the time limit applies to your case. For more information, please head over to our other guide on what is the personal injury claim time limit.

Are you wondering how much time you have left to claim? Call us today so we can look into this for you.

Calculate Compensation For Aggravated Pre-Existing Conditions

You may be wondering how much compensation you could be entitled to. The settlement you’re awarded will depend on how much pain the aggravation of your injury has caused you. It will also be influenced by how long recovery is likely to take. The more severely you were impacted, the more compensation you could be entitled to.

The Judicial College has released guidelines that can be used to value claims. It includes guideline compensation brackets for a number of different injuries of varying severities.

In order to determine the severity of your injury, a medical assessment with an independent expert will be carried out. The expert will compile their findings in a report, which can then be used to help value your claim.

The table below shows a selection of different injuries from the Judicial College Guidelines. These are purely for guidance, and the first figure is of our own design and not from the JCG.

Compensation Brackets

• Multiple severe injuries with financial impact, such as the cost of travel to and from medical appointments, could be awarded up to £500,000+
• A very severe foot injury resulting in disability could exacerbate a pre-existing back condition and has a compensation bracket of £102,470 to £133,810
• Moderate (ii) neck injuries may exacerbate a condition that the claimant has had for around five years or more and could be worth £16,770 to £30,500
• Moderate (iii) neck injuries involve an acceleration or exacerbation of a pre-existing condition that claimants have had for a shorter amount of time. The compensation bracket for this is £9,630 to £16,770
• A minor (i) neck injury could result in shorter-term worsening of injuries that the claimant has typically had between one to two years. This could be worth £5,310 to £9,630
• A moderate (ii) back injury could involve the worsening of a pre-existing condition that the injured person has had for five or more years could potentially receive between £15,260 to £33,880
• Minor (i) back injuries related to more short-term acceleration of a pre-existing condition could be worth £9,630 to £15,260
• Less serious (i) fractures of the leg, with an incomplete recovery, may worsen a pre-existing disability. The compensation guideline for this is £21,920 to £33,880
• A moderate (ii) knee injury could involve short periods of acceleration to a pre-existing condition. This could be valued up to £16,770
• A moderate toe injury could worsen a degenerative condition that the injured person already has. This could entitle you to up to £11,720

Contact us today to find out how much you may be eligible for in road traffic accident compensation.

Types Of Damages Which Could Be Awarded After A Car Accident

As part of a personal injury claim, there are two types of damage that you could receive. General damages cover your physical and psychological suffering, and special damages cover any financial losses you have incurred as a result.

For example, the aggravation of an injury could affect your ability to work. You could be forced to take time off due to your condition or even develop a disability that prevents you from returning to work altogether. It could also mean that you need further treatment, like physiotherapy, which you have to pay out of pocket for.

Some other examples of costs that could be recovered by claiming special damages include:

• Medical expenses – such as prescription fees or the cost of medication
• Care costs – including professional care and gracious care from loved ones
• Domestic help – such as a cleaner, gardener or childminder
• Travel fees – including those for trips to and from hospital appointments
• Adaptations to your home – such as a stairlift, handrail or wet room

Whatever costs you wish to recover, it’s vital that you retain proof of them in the form of receipts, invoices, etc. This way, you can give yourself the best chance of restoring yourself to the financial position you were in before your car accident.

What Injuries Could Be Aggravated By A Car Accident?

A range of both physical and psychological conditions could be exacerbated by a car accident. Degenerative diseases could also be accelerated, which could have detrimental effects on both your quality of life and life expectancy.

One example of an injury that could aggravate a pre-existing condition as a result of a car accident is whiplash. Typically, whiplash is a relatively minor injury that can heal on its own within 2 to 3 months. However, it could aggravate a pre-existing condition such as arthritis in the neck or a permanent back injury of some kind.

It’s important to note that the process of claiming for whiplash has changed recently. The Whiplash Reform Programme means that all claims worth £5,000 or less will need to be made through an online portal. However, you should still get in touch with our team before making a claim, as your injuries may be worth more than you initially assume.

Another example is a mental health condition, such as anxiety or depression, being aggravated by a car accident. Whether you’re the driver or a passenger, being involved in a car accident can be deeply traumatising, sometimes resulting in post-traumatic stress disorder (PTSD). If you can show that the car accident caused your mental health to worsen, you could be owed compensation.

To learn more about claiming for an aggravated condition such as anxiety after a car crash, contact one of our advisors.

I Did Not Suffer Any New Injuries, Could I Make A Claim?

If you’re involved in a car accident, you could be compensated for the aggravation of your pre-existing injury even if no other injuries have occurred in their own right. Providing you can prove that third-party negligence was responsible for your suffering, you could have grounds to make a personal injury claim.

However, the process of proving that your pre-existing condition was exacerbated by the accident can be complex. For this reason, you may wish to seek the help of a personal injury solicitor; while not a legal obligation, you may find that their expertise and support are helpful in making a claim.

It’s also advisable that you seek medical attention as soon as you can after the accident. This way, your doctor can make a note of your injuries and the way your pre-existing condition was affected. They can also offer you treatment to aid your recovery if necessary.

Sometimes, you may not realise that your condition has been exacerbated straight away. If you only notice that your condition starts to worsen days or even weeks after the accident, you should still seek medical attention as soon as possible.

For a free consultation about your case, speak to one of our specialist advisors today and see if you could claim.

Does The Eggshell Rule Apply To Aggravated Injury Claims?

The eggshell rule is a legal precedent that states that the liable party in a personal injury claim should be held liable for any harm that occurs as a result of their negligence. This is the case even if the injured person is more susceptible to injury because of a pre-existing condition.

The term originates from the analogy of a person who has an unusually thin skull. If a person with such a condition broke their skull in a car accident, then the at-fault party would still be liable for all injuries caused by the accident, even those that resulted from the pre-existing condition.

To learn more about how to prove that a car accident aggravated a pre-existing condition, please read on or contact our team today.

Proving The Car Accident Aggravated A Pre-Existing Condition

You must be able to show via evidence that another road user’s negligent actions directly exacerbated or aggravated a pre-existing condition. Providing strong evidence is vital because it validates your version of events that someone else is responsible for the decline in your health. Think of each piece of evidence as a brick in the foundation of your claim. The more proof you have, the stronger the claim will be.

Below, we’ve provided specific examples of how you can prove the car accident has affected your pre-existing condition:

• Medical records comparing your health before and after the car accident. This will provide crucial insight into how the incident worsened an underlying condition.
• Witness contact details so your solicitor can write up statements.
• Before-and-after photographs, such as holiday pictures taken prior to the accident. These images can be used to provide a visual record of any new mobility restrictions or reduction in quality of life.
• A diary outlining the progression of your symptoms and pain levels, as well as any medical interventions you have needed since the collision.

In addition to this evidence, you will need to get the registration and insurance numbers for all the drivers involved, as well as their contact details. Did you know that our solicitors can gather documentation on your behalf? Call us today if this is something you would be interested in pursuing.

Proving The Other Party’s Liability

When it comes to proving the other party’s liability, you must have evidence that establishes a road user’s negligent actions led to your pre-existing condition worsening. To establish fault and support your claim, you must:

• Establish how the other road user breached their duty of care, such as speeding, running red traffic lights, or failing to keep a safe distance.
• Prove the breach with evidence, including CCTV footage, dashcam recordings, and copies of reports from the police and your insurer.
• Establish causation by supplying copies of your medical records that show the collision directly led to your underlying condition getting worse.
• Document everything relevant to your claim with photographs. These can include before-and-after images showing a visual decline in health, as well as the accident scene and damage to both your vehicle and personal belongings.

If you need guidance on proving third-party liability, please connect with an advisor today.

What Are The Steps Of A Personal Injury Claim?

The steps of a personal injury claim involve gathering evidence, seeking legal advice, and being represented by a solicitor who will work to negotiate a settlement in your favour. When claiming with the support of Advice, this process can be broken down as follows:

• Getting an initial free consultation to assess the circumstances of the collision and the impact on your health.
• Gathering comparative evidence of how your pre-existing condition has worsened because of the car accident.
• Attending a medical assessment carried out by an independent expert, who will provide a report detailing the decline in your health since the incident.
• Negotiating with the other party’s representatives to secure a final settlement that considers your long-term needs following the worsening of your pre-existing condition.

If you would like to discuss the claims process in detail with a dedicated advisor, please speak with us today. We’re always happy to help you.

Claiming For Pre Existing Injuries Aggravated By A Car Accident With Our Solicitors

Here at Advice, our solicitors believe that receiving the right support as a client during the claims process is absolutely essential. That’s why our solicitors have meticulously designed a wide range of support services to address the unique challenges faced by clients whose pre-existing injuries or illnesses have gotten worse through no fault of their own. We will:

• Use all our knowledge, extensive resources, and collective experience to build the strongest case possible.
• Take great care in connecting you with the rehabilitation services you need for your aggravated pre-existing condition, ranging from pain management and physiotherapy to counselling.
• Secure the evidence needed to show exactly how the underlying condition has accelerated or been exacerbated because of another motorist’s negligent actions.
• Translate any complex legal jargon into straightforward language so you can make informed decisions.
• Create a supportive space that respects the diverse needs of our clients and their families as they navigate the impact of their worsened condition.

Our priority is to achieve a favourable outcome for our clients and ensure their long-term health and wellbeing are at the heart of our work. We will always go above and beyond to give your claim the best possible chance of success. Contact us today if you believe our support will benefit you.

Claiming For An Aggravated Pre-Existing Condition On A No Win No Fee Basis

You can claim compensation for an aggravated pre-existing condition on No Win No Fee terms with our solicitors here at Advice using a Conditional Fee Agreement (CFA). CFAs allow our clients to work with personal injury solicitors while:

• Not having to pay solicitor service fees if the claim fails
• Not having to pay any upfront solicitor service fees
• Not having to pay solicitor service fees while the claim is in progress

At the end of a successful claim, you will pay something called a success fee to the solicitor. This is based on a legally capped percentage of your compensation, capped at 25%, as per the Conditional Fee Agreements Order 2013.

Here at Advice, you can trust us to commit ourselves fully to securing a car accident aggravated pre-existing condition settlement that reflects your long-term needs. We know and understand the law, and we will always work diligently on behalf of every client. Contact us today if you think we’re the right fit for you:

• Call us on 0161 509 2856.
• Contact us online
• Text us using our live chat

Related Services

Here are some further resources that could be of use:

• • Making a claim with The Motor Insurance Bureau (MIB)
  • NHS information on whiplash

FAQs About Claims With A Pre-Existing Condition

Here are some frequently asked questions about claiming with a pre-existing condition.

Can You Sue For A Pre-Existing Injury?

If you can prove that third-party negligence led to a car accident and aggravated a pre-existing injury, you could be able to claim compensation.

How Might My Claim Be Affected?

Whether your injury was pre-existing or not should not affect your eligibility to claim for it. However, proving that your condition was exacerbated by the accident may make the claims process more complex.

How Long Could My Claim Take?

The amount of time a claim takes will depend on the circumstances of the claim, as every case is different. If liability is clear-cut and the injuries are relatively minor, it could be resolved within a few months. More complicated claims could take years to settle.

Can You Organise A Medical Assessment For Me?

If you choose to work with our personal injury solicitors, they’ll be able to organise your medical assessment for you. Using their extensive network of medical professionals, they can arrange an appointment that’s convenient for you, free of charge.

Thanks for reading our guide on how to claim after a car accident aggravated a pre-existing injury.