Headache After Rear-End Car Accident: Here’s What To Know

Headache After Rear-End Car Accident: Here's What To Know

If you’ve started experiencing a headache after a rear-end car accident, you’re not alone—and it’s not something you should ignore. Even a seemingly minor collision can cause the head and neck to jolt in ways that lead to concussions, whiplash-related injuries, or other forms of soft tissue trauma that don’t always show symptoms right away. These symptoms can range from mild and persistent to severe and debilitating, often interfering with work, sleep, and daily life. In some cases, they may appear immediately after the crash, while in others they can develop days, weeks, or even months later. Understanding what’s causing your symptoms and getting proper medical documentation early is critical both for your health and for protecting your legal rights after the crash.

If you are dealing with a headache after a rear-end collision, hiring an experienced car accident lawyer is essential. A good lawyer will protect your legal rights, help you pursue the compensation you deserve, and ensure you receive the medical care needed for your recovery.

Symptoms like these are common after being hit from behind in a crash, even without a direct blow to the head. The force of impact can cause the head and neck to snap forward and backward, straining muscles, ligaments, and nerves in a way that can trigger lasting issues.

As soon as your headache starts after a rear-end car accident, seek medical attention. Getting the right diagnosis and treatment is crucial for your health and for securing compensation for medical bills, lost wages, and pain and suffering. Sometimes headaches can signal a more serious injury, like a traumatic brain injury (TBI) or concussion. A medical professional can make this diagnosis and ensure proper treatment. Your doctor will also connect the headaches to the accident.

An experienced attorney will guide you to the right medical care and protect your right to full compensation from both your No-Fault insurance provider and the at-fault driver.

Fortunately, the best auto crash injury lawyers in the business are at Michigan Auto Law, where we have been helping auto crash victims get the medical and legal help they need for 50 years. Call one of our experienced attorneys right now at (800) 968-1001 for a free, no-cost, no-obligation consultation. We are here for you!

What can cause a headache after a rear end car accident?

A headache after a rear-end car accident is commonly caused by whiplash, where the neck is suddenly forced forward and backward, straining muscles and joints in the cervical spine. It can also result from a mild traumatic brain injury (concussion), even without a direct head impact, due to the brain moving inside the skull during the crash. In other cases, headaches are caused by muscle tension, irritated nerves in the neck, or inflammation following the trauma.

Common contributing factors are: 

  • A direct blow to the head, such as hitting the steering wheel, dashboard, or window
  • The violent back-and-forth motion of the head and neck
  • Muscle injuries in the neck and upper back, including tears, strains, or spasms
  • Pinched nerves in the spine or base of the skull
  • Fractures of the spine and/or skull
  • Herniated or bulging discs in the spine 

Victims who are hit from behind in a crash are particularly prone to these symptoms because of the whiplash effect, which can cause traumatic brain injuries or concussion, even when the victim does not suffer a direct blow to the head.

What to do if you have a headache after a rear-end car accident?

A headache is common after a rear-end car accident, but taking the right steps early after a crash can protect both your health and your legal rights. Prompt action can also help ensure your injuries are properly documented and covered through insurance.

Steps to take:

  • Seek medical attention right away – Do not ignore your symptoms. Early evaluation can help identify serious conditions such as a traumatic brain injury and ensure you receive appropriate treatment.
  • Notify your auto insurance provider – In Michigan, your application for No-Fault benefits must be filed within one year of the crash, and your symptoms should be included in your claim.
  • Avoid signing settlements or waivers too early – Do not accept or sign any settlement documents before speaking with an attorney, as this may limit your rights.
  • Document your symptoms and limitations – Keep detailed records of headache frequency, severity, duration, missed work, and any lost wages.
  • Follow all medical treatment and testing – Attend all appointments and complete recommended diagnostic testing to properly document your condition.
  • Consult an experienced attorney – A lawyer can help evaluate your case, coordinate medical care, pursue No-Fault benefits, and pursue fair compensation for your injuries.

What symptoms should I be aware of?

Headaches from rear-end accidents may start immediately or take time to develop. Common symptoms include:

  • Dull, aching head pain
  • Tightness or pressure across the forehead, sides, or back of the head
  • Tenderness of the scalp, neck and shoulders
  • Loss of appetite (occasionally)


What headache types are common after a rear-end car accident?

Common headache types after a rear-end car accident include:

  • Coup-contrecoup
  • Post-concussive
  • Musculoskeletal
  • Muscle-contraction/spasm
  • Cervical Thoracic somatic dysfunction
  • Nerve dysfunction
  • Occipital neuralgia
  • Vascular
  • Constant daily headaches
  • Tension-type
  • Migraine
  • Cluster
  • Chronic facial pain

What if the headache comes months after the rear end car accident?

If a headache develops months after a rear-end car accident, it may still be related to the crash, even if the symptoms were delayed. In some cases, injuries such as whiplash, cervical spine damage, or mild traumatic brain injuries can have lingering or progressive effects that become noticeable well after the initial trauma. Inflammation, nerve irritation, or structural issues in the neck can also worsen over time, leading to delayed-onset symptoms that were not immediately present after the crash.

It is also important to understand that delayed headaches should not be dismissed as unrelated without proper medical evaluation. Conditions like post-traumatic headaches or untreated soft tissue injuries can persist or evolve gradually, especially if the original injury was not fully diagnosed or treated. Because of this, anyone experiencing new or worsening headaches months after a crash should seek medical attention to determine whether the symptoms are connected to the accident and ensure proper documentation for both treatment and potential legal claims.

Should I ignore a headache after a rear-end car accident?

Never ignore a headache after a rear-end car accident. Whether it starts immediately or months later, you should seek medical attention. Headaches can be symptoms of more serious injuries, such as a TBI or concussion. Early diagnosis and treatment are your best chance for a full recovery.

In addition, getting medical treatment right away and documenting your head pain and related symptoms will help you connect them to the crash. This is important because it will allow you to recover full and fair compensation for all your medical losses from your No-Fault auto insurance provider, and in a lawsuit for your pain and suffering and excess economic damages. The longer you wait, the more likely it is that your insurer will claim the headaches are not related to the crash. The sooner you receive medical treatment, the easier it is to show that these injuries were caused by a trauma, such as a motor vehicle collision, and the harder it will be for an insurance company to later reject your claim or argue they are not caused by your crash.

Can I sue for a headache after a rear-end car accident?

In Michigan, you can sue for pain and suffering after a rear-end car accident that causes a headache, but only if you meet the “serious impairment of body function” threshold. That means the condition (and any related injury, such as whiplash or concussion) must significantly affect your ability to live your normal life. If they are minor or short-term, they typically won’t qualify for a lawsuit beyond No-Fault benefits.

To prove this, you must seek medical attention immediately, link the headaches to the crash, and collect proper medical documentation. An experienced lawyer can help guide you through this process and get the compensation you deserve.

How long do I have to sue?

In Michigan, you generally have three years from the date of the rear-end car accident to file a lawsuit for injuries, including symptoms such as a headache.  (MCL 600.5805(1) and (2)) This deadline is known as the statute of limitations, and it applies to claims for pain and suffering under our state’s No-Fault system.

If you do not file your claim within this three-year period, you will typically lose your right to pursue compensation from the at-fault driver, even if your symptoms continue or worsen over time. There are limited exceptions in certain cases, but in most situations, the three-year deadline strictly applies.

How long do I have to claim No-Fault benefits?

In Michigan, you generally must file a claim for No-Fault Personal Injury Protection (PIP) benefits within one year of a motor vehicle crash. (MCL 500.3145) This includes medical treatment and related expenses connected to your injury.

If you do not give your insurance company proper notice and submit the application for benefits within that one-year period, you may lose the right to have your medical bills and other losses covered under No-Fault insurance. In some limited situations, exceptions may apply, but the one-year deadline is strictly enforced in most cases.

Do I need to hire a lawyer for a headache after a rear-end car accident?

Hiring an experienced car accident lawyer is one of the best steps you can take if you are suffering from a headache after a rear-end collision. A skilled lawyer will help you get the right medical care, file your No-Fault benefits claim, and pursue a fair settlement for pain and suffering.

What compensation is available?

You may be able to recover several types of compensation:

  • No-Fault benefits – Your auto insurance will cover medical bills and lost wages.
  • Economic damages – You can sue the at-fault driver for medical bills, lost wages, and lost earning capacity.
  • Noneconomic damages – You can also sue for pain and suffering if your headaches impair your body function.

How long does a settlement take?

A settlement for a can take anywhere from a few months to over a year, depending on the severity of the injury and how quickly your medical situation stabilizes.

In most cases, insurance companies or attorneys will not finalize a settlement until you reach maximum medical improvement (MMI)—meaning your condition has improved as much as it is expected to. If your symptoms resolve quickly with treatment and documentation is clear, a case may settle in a few months. However, if symptoms are ongoing, require specialist care, or are tied to conditions like whiplash or a concussion, the process often takes longer because the full extent of damages needs to be evaluated before settlement.

Suffering from a headache after a rear-end car accident in Michigan? Call our attorneys now for a free consultation! (h2) 

If you are suffering from a headache after a rear-end car accident in Michigan and you have questions about your legal rights or how to seek compensation for your medical bills, lost wages, or pain and suffering, call an experienced car accident attorney right now at (800) 968-1001 for a free, no-cost, no-obligation consultation

Michigan Auto Law is Michigan’s largest and most successful law firm specializing exclusively in motor vehicle crash injuries. We have been helping car crash victims get the help and compensation they deserve for 50 years. And no auto lawyer or law firm in Michigan has recorded more million-dollar settlements and verdicts than we have.

One secret to our success is that we purposefully take fewer cases than other firms so that we can focus more time and attention on our cases and clients. Our attorneys are never too busy to promptly return phone calls and answer questions. This is one of the reasons we have more than 3,000 5-Star Reviews.

Our client-focused approach also leads to bigger, better and faster settlements for our clients.

Call now and let us fight for you!