Can You File a Personal Injury Claim With a Pre-Existing Condition in Ohio?

The term pre-existing condition refers to an injury, illness, impairment, or other health issue that existed before the incident giving rise to a claim.

It does not have to be a condition that caused constant pain or required treatment on the day of the accident.

Common examples of relevant pre-existing conditions include:

• Back injuries, including a prior herniated disc, spinal fusion, or recurring neck and back pain.
• Arthritis, degenerative disc disease, or other joint and spine conditions.
• Knee injuries, shoulder injuries, or other joint problems from an earlier incident.
• A previous fracture, surgery, or soft-tissue injury.
• Chronic pain, recurring headaches, or a neurological condition relevant to evaluating new symptoms.
• A chronic illness or disability that may affect recovery from an accident-related injury.

A medical record showing an old diagnosis does not, by itself, establish that the condition was causing the same symptoms immediately before the accident.

Likewise, the absence of recent treatment does not prove that a condition had fully resolved.

The relevant history depends on the injuries being claimed and the medical issues genuinely in dispute.

An aggravation occurs when an accident makes an existing injury or condition worse.

The change may involve increased pain, reduced mobility, additional treatment, a longer recovery, or a more significant impairment than existed before the incident.

For example, someone with occasional back discomfort may have been working without restrictions before a rear-end collision but require physical therapy, injections, or time away from work afterward.

The claim may concern additional pain, treatment, and work limitations caused by the collision rather than the entire history of the back condition.

An accident can also cause a completely new injury alongside an existing one, such as a broken wrist in someone who previously had chronic neck pain.

Aggravation Versus Natural Progression

Some medical conditions worsen over time without an external injury.

An insurer may argue that a person’s symptoms reflect ordinary degeneration or an unrelated medical development rather than the accident.

The claimant may therefore need medical evidence distinguishing harm caused by the incident from deterioration that would likely have occurred without it.

An accident that accelerates or increases a condition’s effects may still cause compensable harm, even if the condition was not created by the accident.

A diagnosis alone cannot answer that question, and neither can the fact that symptoms appeared after the incident.

One of the most important legal principles for these claims is Ohio’s eggshell-plaintiff rule, sometimes called the eggshell-skull or thin-skull rule.

This legal principle means that a defendant whose negligence causes injury may be held liable for the resulting harm even if the injured person was unusually susceptible to it.

In Feterle v. Huettner, the Supreme Court of Ohio addressed damages where a collision allegedly contributed to harm involving a pre-existing heart condition.

The decision distinguished harm resulting directly from the accident from harm attributable solely to the normal course of the earlier condition.

Ohio appellate courts have continued to explain that the rule concerns the extent of damages resulting from proven negligence, rather than establishing liability or causation by itself.

What the Rule Does Not Establish

The eggshell-plaintiff rule does not make a defendant responsible for every medical problem the injured person had before the accident.

Under Ohio personal injury law, the claimant still needs to establish the defendant’s duty, breach, causation, and compensable harm.

A person whose pre-existing condition made an accident injury unusually serious may recover for the proven consequences of that injury, but not for unrelated symptoms or treatment that would have been necessary regardless of the accident.

The distinction between susceptibility and causation is addressed in Ohio decisions including Daniels v. Northcoast Anesthesia Providers.

Proper documentation of symptoms, treatment, and everyday functioning before and after the incident helps distinguish an aggravation from an unchanged condition.

A change in symptoms may be significant, but proof of the timing alone may not establish what caused the change.

Establish Your Condition Before the Accident

Earlier medical records may establish whether a prior injury was active, improving, stable, or causing limitations before the incident.

Relevant pre-accident evidence may include:

• Primary care or specialist notes describing the earlier diagnosis and symptoms.
• Prior X-rays, MRIs, or other imaging studies.
• Physical therapy, prescription, surgery, and rehabilitation records.
• Medical restrictions on work, lifting, driving, or other activities.
• Records showing improvement, reduced treatment, or a return to usual activities.
• Employment information or testimony about your functioning before the incident.

A record of previous treatment can sometimes support the claim by showing that the person had improved before the accident.

It can also reveal ongoing symptoms that must be accounted for when evaluating the aggravation.

Document What Changed Afterward

Post-accident records may identify new findings, increased symptoms, referrals, changes in medication, or treatment that was not previously necessary.

Tell your medical providers about the relevant earlier diagnosis and explain accurately how symptoms changed after the accident.

Do not describe an old symptom as entirely new if it existed before, and do not minimize a genuine increase in pain or limitation.

Records of missed work, reduced activity, assistance needed at home, and daily restrictions may help demonstrate the practical consequences of the change.

For example, a person who could walk regularly before a collision but requires assistance afterward may have evidence of a meaningful functional decline, even if imaging also shows an older degenerative condition.

Use Medical Opinions When Causation Is Disputed

Treating physicians and other medical professionals may describe examination findings, the course of treatment, and whether the accident likely aggravated an existing condition.

When causation is medically complex, qualified medical experts may need to address accident-related changes, alternative explanations, or future treatment needs.

In Stinson v. England, the Supreme Court of Ohio held that expert opinions about a causative event must be expressed in terms of probability rather than mere possibility.

Whether expert testimony is necessary depends on the facts and whether the causal connection is within ordinary knowledge.

Expert opinions should address the full extent of the alleged aggravation using the medical history and other evidence, not simply assume that everything occurring after the accident was caused by it.

Potentially, even when earlier records show a diagnosis or imaging abnormality.

Some people have degenerative changes on imaging but experience few symptoms or require little treatment before an accident.

An injury may make an otherwise manageable or asymptomatic condition painful, disabling, or more difficult to treat.

The existence of the underlying condition may help explain susceptibility to harm, but it does not determine whether the accident caused the worsening.

Medical findings, treatment history, and evidence of changes in functioning remain important to that analysis.

There is also no general requirement in an ordinary Ohio negligence claim that a claimant produce a new MRI abnormality to recover for an aggravated injury.

The needed proof depends on the particular medical allegations and applicable legal standards.

An insurance adjuster may review previous treatment or diagnoses when determining whether a reported injury was caused by the accident.

The insurer may argue that the current symptoms were already present, resulted from age-related changes, or would have worsened even without the incident.

It may also question whether specific procedures, missed work, or future care are related to the new injury.

A comparison of earlier and later records may show changes in symptoms or physical functioning that the prior diagnosis alone does not explain.

The insurer’s position should be evaluated against that evidence rather than accepted or rejected solely because of an old medical history.

Disputes involving a prior condition commonly concern:

• Whether a symptom existed before the accident or became more severe afterward.
• Whether a degenerative condition would have progressed without the incident.
• Whether an interval between the accident and treatment affects the medical explanation.
• Whether the injury mechanism is consistent with the diagnosed condition.
• Whether the treatment and expenses claimed relate to the accident or to earlier care.
• Whether the person had work or activity restrictions before the accident.

In car accident claims, a dispute may also involve the force of a collision and whether the available evidence supports the asserted medical consequences.

Vehicle damage is relevant to the circumstances of a crash, but it does not by itself establish the extent of an individual’s medical injuries.

Should You Authorize Access to Your Entire Medical History?

Medical records may be needed to establish the condition before the accident and evaluate whether later treatment was related to it.

An insurer may seek extensive medical records through a broad authorization, including records from providers or periods unrelated to the injuries in dispute.

Review the scope of any medical authorization before signing it, including which providers, dates, and categories of records it covers.

Do not conceal relevant earlier treatment or make inaccurate statements about your history.

The appropriate scope of disclosure depends on the claim, the relevance of the records, and the legal process involved.

Legal support may be useful when an insurer requests unrelated records or disputes the medical history used to assess the aggravation.

When negligence causes a new injury or worsens an existing condition, Ohio personal injury law may allow an injured person to recover compensation for the resulting economic and non-economic losses.

The legal system does not require an automatic reduction in damages merely because an injured person had a prior condition.

A fair outcome depends on distinguishing accident-related losses from treatment or limitations unrelated to the defendant’s conduct.

Depending on the facts, compensable damages may include:

• Medical bills and other reasonable medical expenses for accident-related evaluation, treatment, medication, rehabilitation, or surgery.
• Reasonably supported future medical treatment arising from the aggravation.
• Lost wages for time away from work because of the accident-related injury.
• Reduced earning capacity when the injury affects the person’s ability to work in the future.
• Physical pain, limitations, and other supported non-economic harm caused by the injury.
• Other recoverable expenses or losses established by the evidence and Ohio law.

An accident-related aggravation does not make a defendant responsible for the full extent of treatment that the earlier condition would have required anyway.

For example, treatment that was already scheduled and would have been necessary regardless of the collision may be disputed as unrelated to the claimed aggravation.

The amount a person may recover also depends on whether another party can be held liable, applicable insurance coverage, and the evidence supporting the claimed damages.

A pre-existing condition does not create a special ceiling on compensation, but Ohio’s otherwise applicable damages rules may still limit certain awards.

Having a pre-existing medical condition is not the same as being at fault for an accident.

Fault concerns conduct that contributed to causing the incident or injury, while a pre-existing condition concerns the person’s susceptibility or medical history.

Under Ohio Revised Code Section 2315.33, a claimant may generally recover when their share of fault is no greater than the combined fault of other responsible persons, with compensatory damages reduced proportionally.

A claimant who is found 20% responsible would generally have an otherwise recoverable compensatory award reduced by 20%.

A claimant found 51% responsible generally cannot recover under that statute.

The eggshell-plaintiff rule does not change those comparative-fault requirements.

For accident victims with a pre-existing condition, prompt medical attention and accurate documentation can help distinguish the effects of an accident from earlier symptoms.

The following steps may help preserve a potential claim:

1. Seek appropriate medical attention and tell your medical providers about current symptoms and relevant prior conditions.
2. Explain which symptoms or limitations existed before the incident and which are new or worse.
3. Preserve photographs, witness information, crash reports, or other evidence showing how the accident occurred.
4. Keep medical documentation, treatment instructions, receipts, and employment records that substantiate your injuries and losses.
5. Record changes in ordinary activities, mobility, sleep, and work without overstating the effects.
6. Follow medical advice and explain any gaps in treatment accurately, including problems involving cost, access, or scheduling.
7. Review requests for recorded statements, medical releases, and settlement agreements before responding or signing.

Medical care should be based on health needs rather than undertaken solely to create evidence for an insurance claim.

A settlement release may resolve the claim even if later symptoms or additional treatment arise, so the scope of the release should be understood before acceptance.

Under Ohio Revised Code Section 2305.10, most lawsuits for bodily injury must be filed within two years after the claim accrues.

For an ordinary accident case, the claim typically accrues when the injury occurs, although particular claims and circumstances can have different rules.

The fact that an earlier medical condition existed does not automatically postpone the deadline or restart it when symptoms worsen after an accident.

Reporting the claim to an insurance company, receiving treatment, or negotiating a settlement does not by itself stop the filing period.

Different time limits can apply to certain claims, including medical malpractice matters and cases involving government defendants.

A personal injury lawsuit may be necessary if a claim does not resolve before the filing deadline; insurance negotiations alone do not preserve the right to sue.

At Zoll & Kranz, we represent clients throughout Toledo and Northwest Ohio in personal injury claims involving disputed fault, medical causation, and damages.

Our legal team can review the available medical history, identify questions about aggravation or natural progression, and assess which treatment costs and losses the evidence supports.

Strong legal representation in these cases involves addressing prior diagnoses accurately, including records that support the claim and records that may complicate it.

People with pre-existing conditions deserve fair compensation for additional injuries caused by proven negligence, subject to Ohio law and the available evidence.

We offer a no-obligation consultation to discuss the circumstances of a possible claim, and qualifying personal injury cases are handled on a contingency-fee basis under a written agreement explaining attorney fees and case expenses.

To request a free consultation, contact Zoll & Kranz or call Zoll & Kranz today.