Posted On: May 1, 2026

Recognizing Concussion Symptoms After a Car Accident
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james jones

A car accident can leave you shaken, sore, and disoriented. But one of the most serious injuries you can walk away with is one you might not even notice right away. Concussions don’t always show obvious signs at the scene. You might feel fine at first, only to develop serious symptoms hours or even days later. If you were in a crash in the Charleston area, knowing what to look for could protect both your health and your legal rights.

Our experienced Charleston car accident lawyers at Briggs Law Group offer free consultations for people injured in car accidents. Call 843-242-0282 to discuss your situation. You pay nothing unless we recover compensation for you.

What Exactly is a Concussion?

A concussion is a type of traumatic brain injury (TBI) caused by a sudden impact or jolt to the head. The primary injury results from the direct blunt force or the rapid movement of the brain within the skull. In a car accident, this can happen when your head strikes the steering wheel, window, or headrest, or simply from the violent back-and-forth motion of a collision.

You don’t have to lose consciousness to sustain a concussion. A concussion is an injury to the brain itself, affecting individual cells and the wiring connecting them. That’s what makes concussions so tricky. The damage is internal, invisible on the surface, and easy to underestimate.

Common Concussion Symptoms to Watch for

The symptoms of concussive brain injuries are physical, cognitive, and emotional, and they can appear in different ways.

Physical symptoms

The most common signs include persistent headaches, dizziness, nausea or vomiting, blurred vision, and sensitivity to light and sound. You might also experience fatigue, balance problems, or ringing in your ears.

Cognitive and emotional symptoms

The effects of a concussion are significant and potentially wide-ranging, affecting the ability to think and learn, including concentration, memory, and speed of thinking. Social and emotional functioning may also suffer, leading to irritability and depression. Memory problems, difficulty concentrating, confusion, mood swings, anxiety, and sleep disturbances are common after a concussion.

Delayed symptoms

This is the part that catches many people off guard. Concussion symptoms can appear hours or even days after a crash. You might leave the accident scene feeling relatively normal, only to develop worsening headaches, confusion, or difficulty sleeping days later. These symptoms can persist for hours, days, and potentially longer after the initial impact.

That delay is exactly why seeing a doctor immediately after any car accident is critical, even if you feel fine at the scene.

When to Seek Emergency Medical Attention

Some symptoms require immediate emergency care. Go to the emergency room right away if you or someone in the accident experiences:

  • Loss of consciousness, even briefly
  • A headache that worsens and will not go away
  • Repeated vomiting
  • Slurred speech
  • Seizures or convulsions
  • One pupil larger than the other
  • Increasing confusion or agitation

These can be signs of a more severe brain injury requiring urgent treatment. Do not wait, and do not try to tough it out.

Second Impact Syndrome and Why it’s So Dangerous

One of the most serious risks after a concussion is something called second impact syndrome. This refers to catastrophic or fatal events occurring when an individual suffers a concussion while symptomatic and healing from a previous concussion.

In other words, if you return to normal activities too soon and sustain another head injury before your brain has healed, the consequences can be devastating. Diffuse cerebral swelling with delayed catastrophic deterioration is a known complication of brain trauma in such cases. Second impact syndrome is debilitating, if not deadly.

After a concussion from a car accident, rest and monitoring are essential. Follow your doctor’s guidance before returning to any activities that could put you at risk for another head injury.

Recovery Timelines and Post-Concussion Syndrome

Most people recover from a mild concussion within a few weeks with proper rest, but recovery is not always quick. Post-concussion syndrome, or the persistence of symptoms beyond four weeks, occurs in 10-20% of individuals after concussion. It takes months to years to recover from post-concussion syndrome.

Lingering headaches, difficulty concentrating, mood changes, and sleep problems can persist for months, affecting your ability to work, drive, and live your daily life. This prolonged recovery is something insurance companies often fail to account for, and it is one more reason your claim needs to be taken seriously.

How Concussions are Diagnosed

Concussions are notorious for being difficult to diagnose and treat, and each injury may have a different constellation of findings that can be very subtle. Doctors typically use a combination of neurological exams, testing reflexes, balance, coordination, memory, and concentration; CT scans to check for bleeding or swelling; and MRIs to look for structural damage.

Obtaining a formal diagnosis as early as possible creates a medical record directly tying your injury to the accident. That documentation matters more than most people realize.

Why Documenting Your Symptoms Matters for Your Claim

Start tracking your symptoms from day one. Write down what you are experiencing, when it started, and how it affects your daily life. Keep all medical records, doctor’s notes, and receipts related to your treatment.

Insurance companies will look for gaps in your medical history to argue your concussion either did not happen, was not caused by the crash, or is not as serious as you claim. Thorough documentation from the start makes it much harder for them to minimize your injury.

If you have not been documenting your symptoms yet, start now. It is not too late.

How Insurance Companies Handle Concussion Claims

Concussion injuries pose a unique challenge in insurance negotiations because they rarely produce visible evidence on standard imaging. Symptoms are largely self-reported, which gives adjusters an opening to question their severity. Typical strategies include pointing to delayed treatment as a reason to doubt you were genuinely hurt, attributing your symptoms to a medical condition that existed before the crash, or pushing a quick, lowball settlement before your doctors can determine whether your recovery will be prolonged.

Dealing with these tactics while healing from a brain injury is something no one should have to manage alone. Legal representation can shift that burden and level the playing field.

South Carolina’s Deadline for Filing a Personal Injury Lawsuit

South Carolina law sets a firm time limit on personal injury claims. Under S.C. Code Ann. § 15-3-530, actions for a person’s injury must be commenced within three years, in most cases. For car accident claims, that clock generally starts running on the date of the collision.

With concussion injuries specifically, waiting too long creates a particular problem: the further you get from the accident date, the harder it becomes to establish a clear medical link between the crash and your ongoing symptoms. Early legal and medical action strengthens that connection and preserves critical records that support your case.

Talk to Briggs Law Group About Your Concussion Car Accident

If you or someone you love is dealing with concussion symptoms after a car accident in the Charleston area, you do not have to navigate this alone. Briggs Law Group understands the medical complexities of brain injuries and how to hold insurance companies accountable.

Call 843-242-0282 today to schedule a free consultation and learn about the options available to you. There is no fee unless we recover compensation on your behalf. Briggs Law Group is located at 78 Ashley Point Dr, Suite 201, Charleston, SC 29407, and serves clients throughout the surrounding South Carolina area.

Frequently Asked Questions

• How do I know if I have a case?

You have a personal injury case if someone else has legal fault for hurting you. Legal fault varies from situation to situation. Many cases are based on accidents, where someone created a dangerous situation by not being careful enough. When you ask for a consultation with a lawyer at Briggs Law Group, we explore all possibilities for you to have a case.

• How much time do I have to file a lawsuit?

It depends. For general negligence claims, the time limit to file a lawsuit in South Carolina is three years. But it might be shorter or longer. You should never wait to contact a lawyer. We want to work quickly to preserve evidence and start pursuing your compensation.

• How will my lawyer determine the value of my case?

Your lawyer determines the value of your case by evaluating the types of losses you have. Plus, they consider other factors like how clear fault is and how you can collect compensation. Generally, the worse your injuries and losses, the more your case may be worth. However, there are other factors that may impact your case value.

• What steps should I take to protect my rights after an Injury?

After an injury, get medical care as quickly as possible. Report the accident to the police, your employer, or the property owner, as applicable. Have someone take photos and collect witness contact information. Consult with a lawyer as soon as possible.

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