Car wrecks collide with real lives, not clean slates. People bring their histories to the crash scene: bad backs from warehouse work, prior concussions from sports, arthritis that always flares up when it rains, an old neck whiplash that never entirely resolved. Insurance companies know this, and they often use it to argue that your pain predates the crash. A good car accident lawyer, or car wreck attorney, does not run from that history. The lawyer leans into it, showing what changed, why it changed, and how the law treats people who were already vulnerable.
What follows is how seasoned counsel frames pre-existing conditions in auto cases, the proof that tends to move adjusters and juries, the traps that derail legitimate claims, and the judgment calls a car crash lawyer makes when medicine and law collide.
The legal lens: the eggshell plaintiff rule and its limits
Most states follow some version of a simple principle: a negligent driver takes the victim as they find them. If you are more fragile than the average person and the crash aggravates your condition, the at-fault party is responsible for that aggravation. Lawyers call this the eggshell plaintiff rule. It does not make the at-fault driver an insurer for every ache you ever had, but it does block the common defense that says, You were hurt already, so we owe nothing.
There is a related idea that also matters. Defendants are liable for the natural consequences of their negligence, including making a dormant condition symptomatic. If your degenerative disc disease sat quietly for years, and after the collision your leg now burns and tingles, liability can attach to that change in symptomatology even if imaging looks similar before and after. Symptoms drive damages, not just pictures.
Boundaries still exist. If a new injury would have happened anyway on the same timetable without the crash, a defense expert might persuade a jury to limit damages. In practice, medicine rarely gives neat answers, so a car accident attorney frames probabilities and timelines with treating physicians. The question becomes practical: what was your baseline, what changed after the wreck, and how long did that change last?
Why insurers fixate on pre-existing conditions
Adjusters are trained to hunt for anything that lowers value. Prior injuries, chronic pain, gaps in treatment, old MRI findings, even a single chiropractic note from five years ago can become leverage in negotiation. To an insurer, pre-existing issues serve two purposes. They argue causation, suggesting the crash did not cause your current complaints. And they argue damages, suggesting even if the crash caused some aggravation, it was minor or short-lived.
Medical records support both arguments, which is why claims departments demand broad authorizations. The instinct to hide or minimize your medical past usually backfires. Skilled counsel narrows the scope of records production, then uses selected records to tell a coherent, candid story that differentiates old pain from new limitations.
Building the timeline: before, during, after
A car wreck lawyer starts with a timeline anchored in lived details, not just medical abbreviations. Before the collision, what could you do? How often did you treat? What medications, if any, did you take? A factory worker with a six out of ten low-back ache who still lifted 40-pound boxes daily has a different baseline than a retiree who walked only to the mailbox. The ability to mow a lawn, sit through a movie, or drive a grandchild to school provides simple reference points jurors grasp.
The collision moment itself also matters. Crash mechanics inform injury pathways. Rear-end impacts commonly aggravate cervical structures, while side impacts rotate the spine and can flare previously asymptomatic lumbar stenosis. A car wreck lawyer looks for photographs, repair estimates, event data recorder outputs, and witness descriptions. Force alone does not prove injury, but a detailed crash profile makes medical causation opinions more credible.
After the crash, tempo tells a story. Did symptoms spike immediately or within 24 to 48 hours? Was there a new body region involved? Did the frequency or intensity of care change? A chiropractor or pain management physician who saw you twice a year pre-crash and now sees you weekly paints an obvious contrast. When a car accident attorney briefs a treating doctor, these details turn into chart entries that later stand up against a defense medical exam.
The messy reality of imaging
Lawyers and jurors like pictures, but musculoskeletal https://super-wiki.win/index.php/Tips_for_Dealing_with_Insurance_Adjusters_After_an_Auto_Accident medicine is more nuanced. Many people over 40 show degenerative changes on MRI or X-ray even without pain. A radiology report that lists desiccated discs, osteophytes, and facet arthropathy does not answer causation. A car crash lawyer leans on clinicians who can articulate why symptoms changed despite familiar imaging: new radicular patterns, lost range of motion that did not exist before, persistent muscle spasm on exam, positive Spurling or straight-leg raise tests, or functional deficits on validated measures.
When imaging does change, the lawyer has an easier path. A new annular tear or a worsened herniation at the same level creates a clean before-and-after contrast. Sometimes pre-crash films exist from unrelated care. Retrieving those studies is tedious but potent. A comparative radiology review by a neutral specialist can deflate an insurer’s claim that nothing is different.
Choosing the right voices: treating doctors vs. hired experts
In most injury cases, treating physicians carry more weight than retained experts. A family doctor who saw you for three years before the wreck and then watched your function slide afterward speaks from continuity, not advocacy. That does not mean a case never needs an outside expert. Sometimes the treating doctor cannot opine on causation or future care, or they chart poorly. A car crash lawyer then considers a specialist who can review records and examine you.
The key is to avoid dueling paid experts when unnecessary. Jurors smell it. If a board-certified physiatrist who treated you can testify that your pre-crash pain averaged three and now sits at seven, that you added neuropathic medication post-crash, and that you missed work days you never missed before, the testimony lands without theatrics.
Pre-existing does not mean precluding
Clients often say, My back was already bad, so do I even have a case? The answer depends on measurable change. A car accident attorney evaluates whether the crash caused new pain generators, expanded the involved region, increased frequency of flare-ups, shortened the periods of relief, or accelerated the need for interventions such as injections or surgery. One practical metric is activity tolerance. If you could stand for two hours before and now only thirty minutes, that delta is compensable when tied to the crash.
The law focuses on aggravation and acceleration. If the collision bumped your surgery date from someday to next spring, the at-fault party can be responsible for both the surgery and its downstream consequences. Defense counsel will argue you were a surgical candidate anyway. The rebuttal often rests on conservative care that had previously held the line. A chart that shows years of stability before the crash, followed by failed physical therapy and escalating interventions after, frames acceleration in concrete terms.

Documentation that wins the day
Thorough documentation bridges the chasm between medical complexity and legal clarity. A car wreck lawyer curates three categories of proof:
- The functional baseline: short sworn statements from family, coworkers, or supervisors who can attest to your pre-crash abilities and post-crash limitations. A warehouse foreman noting that you never asked for light duty before the wreck but now rotate tasks every hour is gold. Less is more here. Two or three witnesses who knew your day-to-day life carry more weight than ten vague letters. The medical throughline: consistent chart notes that mark dates of onset, new symptoms, physical exam findings, and treatment response. A single line in a doctor’s note that says patient reports worsening since MVC can support causation more than a stack of generic templates. Counsel often drafts a brief summary for the doctor to review so that critical points are not lost during a rushed appointment. The economic proof: wage records, timekeeping logs, FMLA paperwork, or gig platform screenshots that demonstrate reduced productivity or missed shifts. For self-employed clients, year-over-year profit and loss statements tell a more faithful story than tax returns alone.
These elements turn abstract pain into measurable change. Done right, they also humanize the case so it is not just discs and degrees of flexion.
Handling disclosure without tanking credibility
Hiding prior injuries sinks cases. Insurance companies will find old ER visits and clinic notes most of the time. When a car accident attorney prepares a client for a deposition, the advice is simple: be forthright about old problems, then draw clean lines around what is different now. Vague answers like I don’t recall when records show a detailed history give the defense a credibility pry bar. Better to say, I had intermittent low-back pain that flared a few times a year, I used ibuprofen and heat, and I did not miss work. Since the crash, the pain has been daily and I take prescription medication, and I used my PTO and then unpaid leave in June.
If you saw multiple providers, it helps to keep a simple timeline sheet with dates and reasons. Counsel will use it to refresh your recollection without trying to script your testimony. Juries tolerate imperfect memory, not evasiveness.
Distinguishing aggravations from new injuries
The cleanest path is showing something wholly new, such as a fractured wrist or a torn meniscus. With pre-existing conditions, the distinction matters. A car accident lawyer frames the claim either as a new injury superimposed on a vulnerable structure or as an aggravation of an existing problem. The remedies can look similar, but the proof differs.
For a new injury on a vulnerable structure, the lawyer emphasizes mechanism and abrupt symptom onset. For an aggravation, the emphasis shifts to the slope of decline: increased visit frequency, escalated treatments, and diminished function compared to the stable prior period. In settlement talks, counsel often uses charts to depict appointment frequency by month before and after the crash. Visualizing density of care makes trends intuitive.
Dealing with degenerative disease
Degeneration not only complicates liability, it affects settlement valuation. Insurers often argue that pre-existing degeneration drives a high chance of future symptoms regardless of the crash. A car wreck attorney counters by apportioning. Even if degeneration would have progressed, the crash can be shown to have either accelerated the timeline or added a permanent increment of pain and limitation.
Some states allow apportionment opinions that split responsibility. A defense expert might say 60 percent of ongoing symptoms stem from degeneration, 40 percent from the crash. Plaintiffs’ experts often avoid precise percentages, which can look contrived, and instead focus on function: before you bowled weekly, now you cannot bowl at all. If judges require apportionment for future damages, a pragmatic lawyer pushes for ranges and ties each range to specific cost projections.
Independent medical exams and how to navigate them
Insurers frequently schedule defense medical exams, often called IMEs. They can be thorough, but they also can feel like cross-exams in lab coats. A car accident lawyer prepares clients for what matters. Be precise about dates of onset. Do not minimize or exaggerate. Report what flares symptoms. If a test hurts, say so in the moment, not just afterward. Some jurisdictions allow recording the exam or having a silent observer present. Where permitted, counsel uses that option to keep everyone honest.
After the exam, expect a report that spotlights degeneration, normal imaging, and any inconsistency in your narrative. Anticipate and counter those points with treating physician addenda that explain exam findings the defense overlooks, like reproducible paraspinal spasm or myofascial trigger points that do not show on MRI yet limit function.

Settlement strategy when history is complicated
With pre-existing conditions, settlement windows often open after two milestones. First, when conservative care has either worked or failed, because only then can future care be estimated with credibility. Second, after a key treating doctor gives a written opinion linking the crash to the aggravation or new symptoms with reasonable medical probability. A seasoned car accident attorney times demands to coincide with those anchors.
Valuation must reflect risk. Juries vary in how they treat chronic pain. In venues skeptical of soft-tissue claims, a lawyer might weight economic losses more heavily and push for a fair multiple rather than swinging big on pain and suffering. In friendlier venues, counsel may press for fuller general damages, supported by lay witness testimony and day-in-the-life videos. Adjusters notice when a demand letter reads like a medical brief and when it reads like a human story. The best ones do both.
When surgery enters the picture
Surgery can clarify causation or muddy it. If a neurosurgeon recommends a cervical discectomy after conservative modalities fail, that recommendation can validate the seriousness of the aggravation. But timing matters. Defense counsel will question why surgery was not recommended before, or whether the surgeon relied on subjective complaints. A car wreck lawyer builds the record to show stepwise care: therapy, medications, injections, then surgical consult, with each step linked to documented failure of the last.
Costs escalate quickly. Hospital charges for a spine surgery can range from tens of thousands to well over six figures depending on geography and complexity. A car wreck attorney secures itemized bills, reduces liens where possible, and models future care such as hardware removal or revision surgeries if appropriate. Those numbers ground negotiations.
Practical tips for clients with pre-existing conditions
- Tell your lawyer everything about prior injuries and ongoing symptoms, even if it feels unrelated. Surprises help the defense, not you. Follow treatment plans consistently. Gaps in care become arguments that you got better or never needed care. Track your function weekly. Simple notes on sleep, work tolerance, household tasks, and hobbies create contemporaneous proof. Be careful on social media. Photos of a single good day can be used to undermine months of hard days. Keep medications, braces, TENS units, and other aids. Physical artifacts remind adjusters and jurors that your life changed in tangible ways.
These habits do not inflate claims. They make honest changes visible.
Special scenarios that require judgment
Two examples show how experienced counsel thinks through edge cases.
First, the stoic laborer. A 52-year-old mechanic with longstanding knee pain never missed a shift. After a T-bone collision, he continues to work but shifts to parts ordering and loses overtime. He refuses injections at first. An insurer argues minimal damages because he still works. A car accident lawyer reframes the loss: the overtime was a predictable part of his income, the job transfer cut his advancement path, and he now takes prescription NSAIDs that require regular lab monitoring. By focusing on stamina and vocational impact rather than absence from work, the claim recognizes real harm without pretending disability.
Second, the prior claimant. A 38-year-old rideshare driver had a settled claim from a rear-end crash three years earlier. Her neck improved with therapy. The new crash reawakens neck pain with new arm paresthesia. The defense paints her as a serial claimant. Counsel disarms the label by admitting the prior claim, producing the discharge note that released her from care symptom-free, and highlighting the new neurological symptoms. The treating physiatrist explains the pathophysiology of recurrent injury to a previously insulted segment. The case becomes about vulnerability plus new deficits, not about opportunism.
Selecting counsel when your history is complicated
Not every car crash lawyer handles pre-existing condition cases with the same fluency. Ask prospective counsel how they approach causation when imaging is unchanged, how often they involve treating physicians in narrative reports, and whether they have tried cases where degenerative disease played a central role. A car wreck attorney who can discuss eggshell principles, apportionment dynamics, and IME strategy without fishing for buzzwords likely has the experience your case needs.
Fee structures matter too. Complex medical cases take time and require upfront costs for records, experts, and depositions. Make sure the firm has the resources to carry those costs and the patience to let your medical trajectory declare itself before pushing for settlement.
The bottom line: clarity beats perfection
Pre-existing conditions rarely sink a case by themselves. What hurts a case is vagueness, inconsistency, and a record that fails to distinguish yesterday’s aches from today’s limitations. A diligent car accident lawyer organizes the story around function, anchors medical opinions in concrete timelines, and uses the law’s protection of vulnerable plaintiffs without overreaching. Insurance companies may start by blaming your past. With the right preparation and honest proof, your present gets the attention and compensation it deserves.