Personal injury and pre-existing conditions: What you need to know

i 3 In this article:

Your medical history matters when you get injured in an accident. Having a pre-existing condition does not prevent you from receiving compensation under Arizona personal injury laws. However, it can affect how your claim is evaluated and the amount of compensation you may receive. Understanding how to handle these conditions can protect your rights and strengthen your case.

Why is disclosing your pre-existing conditions essential?

Being transparent with your chosen attorney and medical providers is important. Arizona courts expect honesty about any prior injuries or medical issues. Failing to disclose these conditions can damage your credibility and make it seem like you are hiding something. Opening up about your medical history early allows your attorney to clearly separate your new injuries from the existing ones and show how the accident made your condition bad. Below are common examples of pre-existing conditions that may affect a claim:

  • Back or neck injuries from previous accidents
  • Degenerative joint disease or arthritis
  • Head trauma and previous concussions
  • Nerve damage and chronic pain

Your legal team can use your medical records and expert testimony to show how the present accident worsened these conditions.

How are pre-existing conditions evaluated?

Arizona applies the “eggshell plaintiff” rule, meaning the negligent party is liable for the full harm caused, even if you were more easily injured due to a prior condition.

However, courts and insurers also consider the contrasting “crumbling skull” rule. This limits recovery to the damage beyond what your condition would have caused anyway. The courts and insurance adjusters consider the:

  • Medical records comparing your health before and after the accident
  • Expert opinions explaining how the accident worsened your condition
  • Imaging or diagnostic tests confirming the worsening of your injury
  • Treatment history and consistency in your reported symptoms and pains

Proper documentation helps clearly separate your pre-existing conditions from the new injuries brought by the accident. Keep records of your medical visits, note your symptoms and track any changes in your physical or emotional health after the incident. When you provide solid evidence, it becomes harder for insurers to reject your injury or deny your claim.

Your health history should not limit your right to recovery

Your medical history should not affect your right to recovery for an aggravated or worsened pre-existing condition. With the right documentation and transparency, you can pursue the damages you deserve under Arizona law.

NOTE: This blog is for educational purposes only. If you’ve been injured, contact us today for professional legal assistance.

The team was easy to work with, very knowledgeable and courteous. I would absolutely suggest their services for any legal issues.
George W
The team was easy to work with, very knowledgeable and courteous. I would absolutely suggest their services for any legal issues.
George W
Outstanding performance in resolving my case ... His ability to resolve my case was only exceed by his knowledge and skill.
Robert S
Outstanding performance in resolving my case ... His ability to resolve my case was only exceed by his knowledge and skill.
Robert S
I’m very satisfied with the services!
Emily G.
I’m very satisfied with the services!
Emily G.
His talent in front of a judge was incredible ... We highly recommend this firm for anyone who likes to win.
Resident L
His talent in front of a judge was incredible ... We highly recommend this firm for anyone who likes to win.
Resident L
Easy to understand in an environment that has no pressure!
Don R
Easy to understand in an environment that has no pressure!
Don R
Fantastic firm. Michael faith in particular is an incredibly smart and aggressive attorney.
Nick J
Fantastic firm. Michael faith in particular is an incredibly smart and aggressive attorney.
Nick J
Very fair and gave us sound advice. You can't go wrong with West Valley Accident Attorneys!
Vickie Q
Very fair and gave us sound advice. You can't go wrong with West Valley Accident Attorneys!
Vickie Q

Other Legal Services Articles

Feb 25 2026

What is Arizona’s jaywalking law?

A pedestrian accident can disrupt your life in ways you couldn’t have expected. If a driver hit you while you walked, you might wonder how Arizona’s jaywalking laws...
Feb 24 2026

4 rights you should exercise during a DUI stop

Imagine you are driving home after watching a game with friends in Surprise. Suddenly, you see flashing lights in your rearview mirror. A routine traffic stop can...
Feb 19 2026

Are there specific creditor priorities during probate in Arizona?

Your loved one has named you as their estate’s personal representative, and you recently received the Letters of Appointment. As part of your tasks, you have a legal...
Feb 13 2026

What happens when someone dies without a will in Arizona?

Many people assume their spouse will automatically inherit everything if they pass away. In Arizona, that assumption can lead to unpleasant surprises for surviving...
Feb 12 2026

Estate planning for Arizona snowbirds: A guide for part-time residents

If you spend part of the year in Arizona and part in another state, your estate plan needs extra care. Living in two places can create confusion about which state’s...
Feb 09 2026

Do all assets go through probate in Arizona?

When someone you love dies, you face strong emotions and many practical worries. Their choices about property ownership and beneficiary names can force your family into...
Jan 30 2026

Can a criminal conviction be set aside?

Having a criminal record can make daily life more stressful. It can affect your job, housing and professional licenses. Arizona law allows you to have certain...
Jan 15 2026

What happens if an uninsured driver hits you in Arizona?

Unfortunately, not all Arizona drivers have auto insurance. If an uninsured driver hits you, your own insurance typically serves as your safety net. Understanding how...
Jan 14 2026

What you should know about the no-contest rule in Arizona wills

You’ve spent decades building your estate and nurturing your family relationships. Now you’re planning for the future, but you worry about what happens after you’re...
Jan 12 2026

Can riding without a helmet hurt your accident claim?

Yes, not wearing a helmet can affect your motorcycle accident claim, especially if you suffered a head injury. Even in states like Arizona, where helmet laws are more...

Search All Articles

Contact Us

free consultation

"*" indicates required fields

Name*

Practice Areas

Our Areas of Legal Expertise

Personal Injury

  • Motor vehicle accidents
  • Motorcycle accidents
  • Truck crashes
  • Bicycle and pedestrian accidents
  • Aviation accidents
  • Boating accidents
  • Premises liability, including slip-and-fall claims
  • Construction injuries
  • Dog bites
  • Medical malpractice

Learn More

Real Estate Law

  • Real estate and property development
  • Real estate financing
  • Construction law
  • Commercial property transactions
  • Residential real estate
  • Real estate litigation and property disputes
  • Loan workouts and foreclosures
  • Government entity services
  • Homeowners association (HOA) and commercial owners association law
  • Foreclosure issues
  • Commercial and residential evictions

Learn More

Construction Law

  • Construction entity formation
  • Construction contract disputes
  • Licensing, insurance, bonding and sureties
  • Bidding and bid protests
  • Permits and variances
  • Mechanic’s liens and subcontractor disputes
  • ROC complaints (nonperformance, workmanship)
  • Construction defect litigation

Learn More

Estate Planning

  • Durable power of attorney to handle your personal affairs if you cannot
  • Health care power of attorney for medical decisions on your behalf
  • An advance directive (living will) that outlines your wishes for end-of-life care
  • Guardianship or conservatorship for an incapacitated family member
  • Designation of guardians for minor children
  • Revocable or irrevocable trusts to protect your assets
  • Charitable trusts or gifting

Learn More

Criminal Defense

  • Domestic violence and aggravated assault
  • Burglary, larceny and theft
  • Drug crimes (possession, delivery, manufacture, conspiracy)
  • Forgery, embezzlement and fraud
  • DUI, DWI, suspended license and traffic violations
  • Sex offenses
  • Other felony and misdemeanor allegations

Learn More

Employment Law

  • The Age Discrimination in Employment Act of 1967 (ADEA)
  • Employee handbooks and personnel policies
  • Agency issues
  • Unemployment insurance benefits appeals
  • Wrongful termination

Learn More

Business And Commercial Law

  • Employee contracts and restrictive covenants
  • Commercial leases
  • Commercial property transactions
  • Construction contracts
  • Debt collection
  • Commercial loan workouts
  • Business succession planning
  • Contract disputes and defense of claims
  • Landlord-tenant disputes

Learn More

Civil Litigation

  • Debt collection for creditors
  • Real estate litigation and property disputes
  • Corporate business disputes
  • Construction law disputes
  • Estate and probate litigation
  • Personal injury and wrongful death

Learn More

Bankruptcy

  • Foreclosure
  • Reposession
  • Creditor Harassment
  • Chapter 7
  • Chapter 13

Learn More

Debt Collection

  • Debts secured by real estate
  • Debts secured by motor vehicles and other equipment
  • Unsecured debts

Learn More

Government Law

  • Councils and Boards
  • Land Acquisition and Disposal
  • Prosecution
  • Personnel
  • Intergovernmental Agreements
  • Open Meeting Law and Executive Sessions
  • Subdivisions

Learn More