Concussion After a Car Accident: Symptoms and California Claims

A concussion after a car accident can cause headaches, dizziness, trouble concentrating, memory changes and disrupted sleep. Symptoms may begin immediately or emerge later. Get medical evaluation if you suspect a concussion, even if there is no visible head wound. For a California injury claim, preserve the crash evidence, treatment records and specific ways your symptoms affect daily life.

Medical care comes first. Call 911 or seek emergency care for a worsening headache that will not resolve, repeated vomiting, seizures, weakness, slurred speech, unequal pupils, marked confusion, loss of consciousness or difficulty waking. Do not delay emergency care to gather claim records.

What Concussion Symptoms Can Look Like After a Crash

El CDC distinguishes concussion symptoms from emergency danger signs. Report changes in these areas to a clinician:

• Physical: dizziness, headache, nausea, fatigue, balance problems, or sensitivity to light and sound.
• Thinking: problems remembering, concentrating or processing information.
• Mood: irritability, anxiety or sadness.
• Sleep: sleeping more or less than usual, or difficulty falling asleep.

A symptom list cannot diagnose you. Tell the clinician what changed after the collision, including symptoms that seem unrelated or that someone close to you noticed first.

Can You Have a Concussion Without Hitting Your Head or Blacking Out?

A forceful jolt to the body can move the head and brain rapidly, so a direct head strike is not required. A concussion is a form of mild traumatic brain injury. As the CDC explains, the term “mild” does not mean its effects cannot be serious.

Do not use the absence of a blackout to dismiss symptoms. Give the treating clinician an accurate account of what you remember, what you do not remember, and anything witnesses observed. Our separate guide discusses concussion and loss of consciousness in more detail.

Why the Symptom Timeline Matters

Tell your clinician when symptoms started and how they changed. If you initially reported feeling fine, explain what appeared afterward rather than trying to make every record sound identical. Distinguish the date of the crash, the first symptom, the first medical visit and any later diagnosis.

For a claim, a timeline helps organize the evidence. It does not prove by itself that every later symptom came from the accident. Be candid about earlier headaches, prior injuries and other relevant medical history. If cost, transportation or appointment availability affected follow-up, preserve an accurate explanation rather than leaving an unexplained gap.

Our guide to delayed symptoms and treatment gaps addresses the broader documentation issues. Follow medical advice because of your health needs, not to build a larger claim.

How Clinicians Evaluate a Possible Concussion

Evaluation may include your history, symptoms and tests of memory or concentration. A CT scan is not required to identify every concussion. Clinicians may order imaging to investigate concerns such as bleeding. A normal scan does not, on its own, resolve whether you have a concussion. The CDC’s testing guidance explains this distinction.

Ask what the assessment found, what follow-up is recommended and which changes require urgent attention. Keep the discharge instructions and complete reports, not just an image of a scan or a brief insurance summary.

Recovery, Work and Driving: Questions for Your Clinician

Recovery varies. The CDC’s recovery guidance recommends a gradual return to activity after an initial period of rest and written instructions about returning to work, school and driving. Report symptoms that persist or worsen. Do not treat an online recovery estimate as clearance for your usual activities.

Useful questions include:

• Are there restrictions on driving, operating equipment or returning to my job?
• Should my hours or duties change temporarily?
• What should I do if an activity makes symptoms worse?
• When should I return for follow-up, and should I see a specialist?

Keep any written restrictions alongside your attendance and wage records. Describe actual difficulties with tasks instead of assuming that a diagnosis establishes a particular period of disability.

Records That Help Explain a Concussion Injury Claim

The most useful record separates what happened in the crash, what clinicians found and how the injury affected you. Once medical needs are addressed, organize:

1. Crash evidence: the report number, available photographs or video, witness contact information and vehicle records.
2. Medical evidence: evaluations, diagnosis, referrals, treatment notes, test reports, discharge instructions and relevant earlier records.
3. A dated symptom log: factual changes, activities affected and information you reported at appointments. Note improvements as well as difficulties.
4. Work and expense records: bills, receipts, missed shifts, reduced hours and clinician-issued restrictions.
5. Firsthand observations: notes from people who actually saw changes. Their observations should remain their own, not a rehearsed account.
6. Insurance correspondence: claim numbers, letters, requests for information and any statements already provided.

Preserve originals. Do not edit records to remove inconvenient details, fill memory gaps with guesses or exaggerate symptoms. A journal supports an account of daily life; it does not replace medical assessment or independently establish who caused the injury.

What Must a California Concussion Claim Establish?

A concussion diagnosis and responsibility for the collision are different questions. In a negligence claim, the evidence must establish negligence, harm and a causal connection. California’s CACI 400 jury instruction describes the requirement that the defendant’s negligence be a substantial factor in causing the harm.

That is why medical records alone do not establish the whole claim. Crash evidence addresses responsibility. Medical history, examinations and other appropriate evidence address injury and causation. Bills, employment records and documented limitations help explain the losses being claimed.

Depending on the facts and applicable law, recoverable losses may include medical expenses, lost earnings and pain and suffering. Future losses need appropriate support. The California Courts’ personal injury guide provides an overview. No diagnosis carries a fixed settlement value, and insurance limits are not a valuation of your injury.

California Deadlines and Insurance Requests

California personal injury lawsuits generally have a two-year deadline from the injury, subject to exceptions. Claims involving a government entity can require an earlier administrative claim, generally within six months for personal injury, followed by separate lawsuit deadlines. See the California Courts’ government-claim guidance. Do not assume that a later diagnosis automatically starts a new deadline.

Ask for advice about the deadline that applies to your circumstances. An ongoing insurance discussion is not a substitute for checking filing requirements. Keep copies of requests and responses, and distinguish your insurer’s requests from those made by another driver’s insurer.

If you are asked for a recorded statement while your symptoms or medical assessment are still developing, review our guide to insurance recorded statements in California. Avoid guessing about your recovery or giving answers you cannot accurately remember.

Preguntas frecuentes

Can concussion symptoms start the next day?

Yes. Symptoms can emerge hours or days later. Report new or worsening symptoms to a healthcare professional and seek emergency care for danger signs.

Does a normal CT scan rule out a concussion?

No. A concussion assessment is not based only on imaging. Ask the treating clinician what the scan evaluated and what follow-up your symptoms require.

How long will I need to stay off work?

There is no single answer. Ask your clinician for written guidance based on your symptoms and job duties, including whether modified duties are appropriate.

What if I cannot remember parts of the accident?

Report the memory gap to your clinician. For the claim, distinguish your recollection from information supplied by others. Available reports, video and witness accounts may help reconstruct events; do not fill gaps with assumptions.

Is there an average settlement for a concussion?

An online average cannot reliably value an individual claim. Responsibility, medical evidence, supported losses and available coverage all need review. A settlement example from another case is not a promise about yours.

When Legal Review May Help

Legal review may be useful when responsibility is disputed, symptoms interfere with work, medical causation is questioned, or multiple parties or insurance policies are involved. You can discuss your records and questions with State Law Firm’s Sherman Oaks car accident team. Medical evaluation comes first; legal review can then help clarify evidence, deadlines and available options.

This article provides general information, not individualized medical or legal advice.