How Pre-Existing Injuries in Car Accidents Affect New Jersey Injury Claims

If you’ve been injured in a car accident, you may worry that an old injury, chronic condition, or previous surgery will prevent you from filing a claim. It’s a common concern, and one that insurance companies often use to their advantage.

The good news is that having a pre-existing condition doesn’t automatically prevent you from seeking compensation. The real question isn’t whether you had a prior injury, but whether the accident made that condition worse. Pre-existing injuries in car accidents are common, and if a crash aggravated your condition or caused new injuries, you may still have the right to pursue a personal injury claim under New Jersey law.

At a Glance

• A pre-existing condition doesn’t automatically prevent you from filing a car accident claim.
• If the accident aggravated a prior injury or medical condition, you may still be able to recover compensation for the additional harm or aggravation caused by the collision.
• Insurance companies often argue that your symptoms existed before the crash to reduce or deny claims.
• Prompt medical attention, thorough medical records, and comparative medical evidence can strengthen your case.
• New Jersey’s no-fault insurance system covers certain medical expenses through Personal Injury Protection (PIP), while liability claims may allow you to seek additional compensation from the at-fault party.
• An experienced New Jersey car accident lawyer can gather evidence, challenge insurance company arguments, and pursue a fair settlement.

What Is a Pre-Existing Condition?

A pre-existing condition is any illness, injury, or medical condition that existed before your car accident. It doesn’t matter whether the condition was serious or relatively minor. What matters is whether the collision made that condition worse. Proving a pre-existing condition in a car accident case often comes down to solid medical documentation of that change.

Common examples include:

• Back injuries
• Neck injuries
• Arthritis and other degenerative conditions
• Previous fractures
• Herniated or bulging discs
• Prior concussions
• Joint injuries
• Previous surgeries
• Chronic migraines
• Chronic pain
• Limited mobility from an earlier injury

Many people live active lives despite these conditions. A collision can change that by increasing pain, creating new limitations, or requiring additional medical treatment.

Common Conditions That Can Become Worse After a Car Accident

A collision doesn’t always create entirely new injuries. Frequently, it makes an existing condition considerably worse.

Examples include:

Back Injuries

A car wreck can aggravate degenerative disc disease, herniated discs, previous spinal injuries, or chronic lower back pain. Additional treatment, injections, surgery, or extended rehabilitation may become necessary.

Neck Injuries

Even relatively low-speed collisions may worsen prior neck injuries, particularly when the force of the crash causes additional strain on muscles, ligaments, or spinal discs.

Arthritis

Many people manage arthritis successfully for years. A car accident can increase inflammation, reduce mobility, and accelerate pain that previously caused few daily limitations.

Previous Concussions

Someone with a history of concussions may experience increased symptoms after another collision, including headaches, dizziness, memory difficulties, or sensitivity to light and sound.

Mental Health Conditions

Physical injuries aren’t the only concern after a serious collision. Anxiety, depression, or post-traumatic stress symptoms may worsen after a traumatic car crash, requiring additional treatment and support.

Can You Recover Compensation If You Already Had an Injury?

New Jersey law doesn’t require you to have been in perfect health before the accident. In many situations, you can still pursue a personal injury claim if a car accident worsened your pre-existing injuries or caused entirely new injuries. Instead, your attorney must show that the accident caused additional harm or worsened your existing condition.

For example, you may have managed occasional lower back pain for years before a car crash. If the collision caused a herniated disc, increased pain, caused additional nerve damage, or led to the need for surgery, those changes may be compensable.

Likewise, someone with mild arthritis may experience considerably greater pain, reduced mobility, or additional treatment after an accident. The fact that arthritis existed before the crash doesn’t automatically eliminate the right to seek damages for the worsening of that condition.

How Insurance Companies Use Pre-Existing Conditions Against You

One of the first things insurance companies often do after a car accident claim is review your medical history. Adjusters may request years of medical records looking for evidence of:

• Old injuries
• Prior complaints of pain
• Previous surgeries
• Arthritis or other degenerative conditions
• Earlier car accidents
• Work-related injuries
• Sports injuries
• Existing physical limitations

Finding a prior condition doesn’t end your claim. However, insurers frequently argue that your current symptoms are simply the natural progression of your earlier condition rather than injuries related to the collision.

They may claim:

• Your pain existed before the accident.
• The crash didn’t significantly change your condition.
• Your current treatment would have been necessary anyway.
• Your symptoms result from aging instead of the accident.
• Your medical expenses aren’t related to the collision.

These arguments are common in New Jersey personal injury claims, particularly when someone has a documented pre-existing medical condition.

Why Medical Evidence Is So Important

The strongest way to challenge these insurance company arguments is with detailed medical evidence. Rather than simply showing you had an injury before the crash, your attorney works to demonstrate how your condition changed afterward.

Important evidence may include:

• Prior medical records
• Emergency room records
• Physician notes
• Diagnostic imaging
• MRI scans
• CT scans
• X-rays
• Surgical records
• Diagnostic tests
• Physical examinations
• Opinions from medical professionals

Doctors often compare your condition before and after the accident. This process, sometimes called comparative medical evidence, shows whether the collision directly contributed to increased symptoms or additional injuries.

For example, imaging studies may show that a previously stable spinal condition now includes a new herniated disc or additional nerve compression following the collision. Medical documentation may also demonstrate:

• Increased pain
• Reduced mobility
• New physical limitations
• Additional doctor visits
• Longer recovery periods
• The need for physical therapy
• Additional medications
• Future treatment recommendations

The more clearly your records document these changes, the stronger your personal injury case becomes.

The Eggshell Skull Rule and How It Applies to Your Claim

Some people mistakenly believe that having a pre-existing condition prevents them from filing a lawsuit. That’s generally not how personal injury law works.

Under what’s commonly known as the eggshell skull rule, a negligent party generally takes an injured person as they find them. If a car accident aggravates a pre-existing medical condition, the person responsible for the collision may still be legally responsible for the additional harm caused by the crash, even if someone without that condition might have suffered less severe injuries. (Source: NJ Courts, Model Civil Jury Charge 8.11F, Aggravation of the Preexisting Disability)

That doesn’t mean every symptom automatically becomes part of the claim. Instead, the focus remains on proving how an aggravated pre-existing injury occurred and identifying the additional harm caused by the collision.

What You Should Do After a Car Accident

The steps you take immediately after a car accident can make all the difference when proving that your condition became worse because of the crash.

If possible, you should:

• Seek immediate medical attention, even if your symptoms seem manageable.
• Tell your doctor about both your current symptoms and your prior medical history.
• Follow all recommended medical treatment.
• Keep detailed records of appointments, medications, and expenses.
• Save copies of your medical bills and medical records.
• Document changes in pain, mobility, and daily activities.
• Avoid missing follow-up appointments.
• Contact a car accident lawyer before providing detailed recorded statements to the insurance company.

Being honest about your previous injuries is one of the most important things you can do. Attempting to hide earlier medical conditions can damage your credibility if the insurance company later discovers those records.

Instead, allow your attorney to explain how the collision changed your condition and present the medical evidence supporting your claim.

How New Jersey Law Applies to Pre-Existing Injury Claims

New Jersey’s insurance laws can affect how your car accident claim proceeds when a pre-existing condition is involved.

New Jersey’s No-Fault Insurance System

New Jersey operates under a no-fault insurance system for many medical expenses resulting from a car accident. In most situations, your own Personal Injury Protection (PIP) coverage pays for eligible medical treatment regardless of who caused the crash. (Source: NJ Motor Vehicle Commission, Insurance Requirements)

Depending on your policy and the circumstances of your case, you may also have the right to pursue a claim against the at-fault party for damages that extend beyond PIP benefits, including non-economic damages such as pain and suffering.

An experienced car accident lawyer can evaluate your situation and explain which options may be available.

Proving the Accident Made Your Condition Worse

One of the most common issues in these cases is causation. The insurance company may argue that your symptoms resulted from the natural progression of your pre-existing condition rather than the collision itself. Your attorney, however, works to demonstrate that the accident directly contributed to a measurable change in your health. (See also NJ Courts, Model Civil Jury Charge 8.11F, cited above, which governs how New Jersey courts instruct juries on aggravation claims.)

Evidence that may help establish causation includes:

• Medical records created before the accident
• Emergency room records following the collision
• Diagnostic imaging performed before and after the crash
• Opinions from treating physicians
• Reports from specialists
• Documentation of new or increased symptoms
• Records showing additional treatment after the accident

When this evidence clearly demonstrates that the accident aggravated your condition, it can strengthen your personal injury claim and help challenge arguments made by insurance companies.

What Compensation May Be Available?

Each personal injury case is different, so there isn’t a standard settlement amount for aggravated pre-existing injuries.

Instead, compensation depends on the nature of your injuries, the available evidence, the insurance coverage involved, and the extent to which the accident caused additional harm.

Depending on the circumstances, potential compensation may include:

• Medical bills
• Future medical expenses
• Ongoing medical treatment
• Rehabilitation costs
• Lost wages
• Reduced earning capacity
• Property damage
• Emotional distress
• Mental anguish
• Pain and suffering
• Other non-economic damages

If the collision results in permanent disability, long-term care needs, or major lifestyle changes, those losses may also become part of your claim.

Why You Should Work With an Experienced New Jersey Car Accident Lawyer

Cases involving pre-existing conditions are often more complex than other personal injury claims because the focus frequently moves from whether you’re injured to why you’re injured.

Insurance companies may argue that your symptoms existed before the collision or attempt to devalue claims by pointing to earlier medical treatment. An experienced New Jersey car accident lawyer understands how to respond with objective evidence.

Depending on your case, your attorney may:

• Obtain complete medical records
• Organize your medical history
• Consult treating physicians and other medical professionals
• Review diagnostic tests
• Demonstrate how the accident aggravated your condition
• Challenge unsupported conclusions from the insurance company
• Negotiate for a fair settlement
• Prepare your case for trial if necessary

Strong legal representation can meaningfully strengthen your claim when disputes arise over pre-existing conditions and causation.

Frequently Asked Questions

Can I still file a claim if I had a pre-existing condition?

A pre-existing condition doesn’t automatically prevent you from filing a car accident claim. If the collision made your condition worse or caused additional injuries, you may still be able to seek compensation.

Should I tell my doctor about previous injuries?

Always provide an accurate medical history. Being honest allows your physician to evaluate how the accident affected your condition and creates reliable medical documentation.

Can insurance companies deny claims because of pre-existing conditions?

They may attempt to do so or argue that your symptoms are unrelated to the collision. Strong medical evidence and thorough documentation can help challenge those arguments.

What is an aggravated injury?

An aggravated injury occurs when an accident worsens an existing injury or medical condition, leading to increased pain, additional treatment, or greater physical limitations.

What if my back pain became worse after a car accident?

You may still have a claim if the car accident made your condition worse. Medical records and physician opinions often play an important role in proving aggravation.

Does arthritis count as a pre-existing condition?

Arthritis is one example of a pre-existing condition that can become more painful or limiting after a collision.

Why are medical records so important?

Your medical records help document your condition before and after the accident, making it easier to demonstrate how the collision affected your health.

How long do I have to file a New Jersey car accident lawsuit?

New Jersey’s statute of limitations gives you two years from the date of the accident to file a lawsuit, although exceptions may apply. (Source: NJ Courts, What Is the Statute of Limitations for the Claim in My Case?)

Can I recover compensation for emotional distress?

Depending on the facts of your case and applicable law, potential compensation may include emotional distress, mental anguish, and other non-economic damages.

When should I contact a car accident lawyer?

It’s generally best to contact a car accident lawyer as soon as possible after the accident so evidence can be preserved, questions from the insurance company can be addressed appropriately, and your legal rights can be protected.

Don’t Let a Pre-Existing Condition Stand Between You and Fair Compensation

A car accident can leave you coping with painful injuries, growing medical bills, lost income, and uncertainty about your future. If you’re worried that a pre-existing condition could affect your car accident claim, you don’t have to assume the insurance company has the final word.

At The Law Offices of Peter N. Davis & Associates, we’ve spent more than 30 years helping injured people throughout New Jersey pursue compensation after serious motor vehicle collisions. Our New Jersey car accident lawyers understand how insurance companies evaluate claims involving pre-existing injuries, and we know how to build persuasive cases supported by strong medical evidence. Whether your accident aggravated an old injury or caused entirely new ones, we’ll work to pursue the compensation available under New Jersey law.

You won’t pay anything unless we recover compensation for you. We offer free consultations 24/7 because accidents don’t happen on a schedule. Call (973) 279-7246(973) 279-7246 or complete our online form to schedule your no-obligation consultation.

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