Why Are My Concussion Symptoms Getting Worse? Causes & What to Do

Recovering from a concussion can be frustrating—especially when you thought you were getting better and suddenly your symptoms seem worse again.

Maybe your headaches have returned.

Maybe you're more dizzy than you were a few weeks ago.

Maybe exercise that seemed manageable is now triggering brain fog or fatigue.

Or perhaps you were doing relatively well until you went back to work, increased your workouts, spent more time on screens, or simply tried to resume your normal life.

If your concussion symptoms are getting worse, it doesn't necessarily mean that your brain is being damaged again or that you are back at square one.

Symptoms can fluctuate during concussion recovery, and physical or cognitive exertion can temporarily increase symptoms. The CDC notes that concussion symptoms can change during recovery and that symptoms may worsen or re-emerge with exertion.

The important question is:

Why are your symptoms getting worse, and what can you do about it?

In this article, we'll look at some of the most common reasons concussion symptoms can flare up and how to approach recovery without getting stuck in a cycle of doing too much, feeling worse, and then stopping everything.

Can Concussion Symptoms Get Worse During Recovery?

Yes. Concussion symptoms don't always improve in a perfectly straight line.

You may have several good days followed by a bad day.

You may feel better in the morning and worse by the afternoon.

You may tolerate a 20-minute walk one day but develop a headache after the same activity the next day.

That doesn't automatically mean your concussion is getting worse.

Symptoms can fluctuate in response to factors such as:

• Physical activity

• Cognitive activity

• Sleep

• Stress

• Your total activity load

• Headaches or migraine

• Vestibular problems

• Visual demands

• Neck-related symptoms

• Autonomic or exercise intolerance

• Returning to normal activities too quickly

The CDC specifically notes that concussion symptoms can change during recovery and that symptoms may worsen or re-emerge with physical or cognitive exertion. Symptoms can fluctuate during concussion recovery, and physical or cognitive exertion can temporarily increase symptoms. The CDC recommends using symptom changes to help guide the return to activity. CDC: Managing Return to Activities

So rather than asking only:

"Why am I worse today?"

it can be more useful to ask:

"What changed in the last day or two?"

Why Are My Concussion Symptoms Getting Worse?

There isn't one explanation that applies to everyone.

Persistent or worsening symptoms can have several possible contributors, and sometimes more than one is involved.

Here are some of the most common patterns I see.

1. You're Doing Too Much Too Soon

One of the most common reasons symptoms flare is simply increasing your activity faster than your current tolerance allows.

This can happen with:

• Exercise

• Work

• School

• Screen time

• Social activities

• Driving

• Household responsibilities

• Travel

• Sports

You may feel good enough to increase everything at once.

Then your symptoms catch up with you.

Signs that your activity level may be too high

You might notice:

• Headaches after activity

• Increased dizziness

• Brain fog

• Fatigue

• Light or noise sensitivity

• Difficulty concentrating

• Feeling significantly worse later in the day

• A symptom flare that lasts well beyond the activity itself

This doesn't mean you should avoid activity altogether.

In fact, prolonged avoidance isn't generally the goal of concussion recovery. Current guidance recommends gradually returning to regular activities as symptoms improve, while adjusting activities that significantly worsen symptoms.

The goal is to find the right dose of activity for where you are now.

2. You're Stuck in the "Boom and Bust" Cycle

This is incredibly common.

You have a good day.

You think:

"Finally! I'm better."

So you exercise harder, catch up on work, spend hours on your computer, meet friends, run errands, and try to get back to normal all at once.

Then the next day:

Boom.

Your symptoms are significantly worse.

So you stop almost everything.

You rest until you feel better.

Then you repeat the cycle.

The problem isn't necessarily that you're doing too much OR too little.

It's that you're having difficulty finding a consistent level of activity that you can gradually build from.

A more structured progression can help you move away from:

Too much → flare → complete rest → feel better → too much again

and toward:

Appropriate activity → recovery → gradual progression → greater tolerance

3. Exercise Is Triggering Your Symptoms

Exercise can be an important part of concussion rehabilitation, but the wrong amount or type of exercise can trigger symptoms.

You might notice:

• Headache

• Dizziness

• Brain fog

• Fatigue

• Nausea

• Increased heart rate

• Feeling shaky

• Feeling unusually exhausted after exercise

That can be confusing.

You may have been told:

"Exercise is good for concussion recovery."

So why does it make you feel worse?

The answer isn't necessarily that exercise is bad for you.

It may be that your current exercise dose is too high for your present level of tolerance.

Research and current concussion guidelines support appropriately prescribed aerobic exercise as part of concussion rehabilitation, while emphasizing individualized progression rather than simply pushing through symptoms. Amsterdam International Consensus Statement on Concussion in Sport

Research and current concussion guidelines support appropriately prescribed aerobic exercise as part of rehabilitation, while emphasizing individualized progression rather than simply pushing through symptoms.

If exercise is one of your biggest problems, read:

Why Does Exercise Make My Concussion Symptoms Worse?

Your Autonomic Nervous System May Be Contributing

Another possible contributor is autonomic dysfunction.

Your autonomic nervous system helps regulate things like:

• Heart rate

• Blood pressure

• Blood flow

• Breathing

• Body temperature

• Your response to physical stress

Some people experience autonomic changes following concussion, and these may contribute to symptoms such as exercise intolerance or dizziness in certain individuals.

You may notice:

• Your heart rate increases quickly when you stand

• You feel dizzy or lightheaded when standing

• Exercise makes you feel unusually unwell

• You fatigue quickly

• You feel worse in heat

• Physical activity triggers brain fog or headache

These symptoms can have multiple causes, so they shouldn't automatically be attributed to autonomic dysfunction.

If this sounds familiar, read:

Post-Concussion Autonomic Dysfunction: Symptoms, Causes & What Helps

5. Your Neck May Be Contributing to Your Symptoms

Your concussion may have involved more than your brain.

A fall, whiplash-type movement, sports injury, or impact can also affect your neck and cervical spine.

For some people, neck-related problems can contribute to:

• Headaches

• Neck pain

• Dizziness

• Difficulty tolerating certain positions

• Symptoms that increase after prolonged computer work

For example, you may notice that your headache becomes worse after sitting at a computer for several hours or that your symptoms increase when your neck is stiff.

If neck symptoms are part of your picture, they may need to be addressed as part of your overall recovery rather than treated as a completely separate problem.

6. Your Vestibular or Visual System May Need Attention

Dizziness, nausea, motion sensitivity, and difficulty tolerating busy environments can sometimes involve the vestibular system.

Visual demands can also contribute to symptoms.

You might notice that your symptoms increase when you:

• Walk through a busy store

• Look at moving objects

• Scroll on your phone

• Drive

• Turn your head quickly

• Move through visually complex environments

• Read for long periods

If dizziness is one of your primary symptoms, read:

Why Am I Dizzy After a Concussion?

And if you experience spinning or positional vertigo, you may want to read:

Vertigo After Concussion (BPPV)

7. You're Not Sleeping Well

Sleep problems can make almost everything harder.

Poor sleep can leave you more sensitive to:

• Headaches

• Fatigue

• Stress

• Exercise

• Cognitive demands

• Screens

• Normal daily activity

If your sleep has changed since your concussion, don't overlook it.

Improving sleep isn't necessarily going to solve every concussion symptom, but it can be an important piece of the overall recovery picture.

Read:

Why Can't I Sleep After a Concussion?

8. You're Increasing Screen Time or Cognitive Activity Too Quickly

Sometimes the problem isn't physical activity.

It's mental activity.

You may feel okay until you:

• Work on your computer

• Answer emails

• Read

• Study

• Scroll on your phone

• Watch TV

• Spend several hours in meetings

Then your headache, eye strain, dizziness, or brain fog increases.

That doesn't mean screens are damaging your brain.

It may mean that your current tolerance for visual and cognitive activity is lower than it was before your concussion.

The CDC recommends reducing screen exposure if it worsens symptoms and gradually returning to regular activity as symptoms improve.

Read:

Screen Time After a Concussion: How Much Is Too Much?

9. You're Trying to Treat Only the Symptom

This is one of the biggest reasons people get stuck.

You have a headache.

So you focus on the headache.

You have dizziness.

So you focus on the dizziness.

You have brain fog.

So you focus on the brain fog.

But persistent concussion symptoms can involve multiple overlapping systems.

For example, someone with headaches may also have:

• Neck dysfunction

• Vestibular dysfunction

• Visual problems

• Sleep disruption

• Exercise intolerance

• Autonomic symptoms

That doesn't mean everyone needs treatment for all of these things.

It means that the right approach depends on what is actually contributing to your symptoms.

This is why I prefer looking at the whole picture rather than treating every symptom in isolation.

What Should You Do If Your Concussion Symptoms Are Getting Worse?

If your symptoms are worsening, your first step shouldn't necessarily be:

"Do nothing."

Instead, take a look at what may have changed.

Ask yourself:

What have I increased recently?

Exercise?

Work?

Screens?

Social activity?

Driving?

Travel?

School?

Then ask:

What symptoms are increasing?

Headache?

Dizziness?

Brain fog?

Fatigue?

Heart rate?

Neck pain?

Visual symptoms?

And finally:

How long does the flare last?

This information can help you understand your current tolerance and identify patterns.

How to Stop the Boom-and-Bust Cycle

Instead of alternating between doing everything and doing nothing, try to establish a manageable baseline.

That might mean:

Start with an activity level you can consistently tolerate.

Don't choose your starting point based on what you used to be able to do.

Choose it based on what your body can handle now.

Break activity into smaller amounts.

Instead of one long workout, you may tolerate several shorter bouts better.

Instead of working for four straight hours, you may need structured breaks.

Progress gradually.

Once your current level becomes manageable, you can begin increasing the challenge.

The goal is:

Build capacity—not constantly test your limits.

What If I Feel Worse Even When I'm Doing Everything "Right"?

This is one of the most frustrating parts of concussion recovery.

You may be:

• Sleeping well

• Eating well

• Exercising

• Taking breaks

• Limiting screens

• Trying to pace yourself

…and still feel terrible.

If that's happening, it may be time to stop simply trying more of the same.

Instead, consider whether you're missing an important contributor to your symptoms.

Could your dizziness be vestibular?

Could your headaches involve your neck?

Could exercise intolerance be related to autonomic regulation?

Could visual demands be contributing to brain fog?

Could poor sleep be keeping your system from tolerating normal activity?

This is where a more individualized, systems-based approach can become important.

A Structured Approach to Concussion Recovery

If your symptoms are fluctuating or getting worse, you may not need more random advice.

You may need a plan.

That's why I created The Concussion Solution.

It is a step-by-step online program designed to help you work through the different factors that can contribute to persistent concussion symptoms and progressively rebuild your tolerance to normal activity.

Ready to Stop Guessing What to Do Next?

When Should You Get Evaluated?

If your symptoms aren't improving or are getting worse after returning to regular activities, the CDC recommends talking with your healthcare provider. CDC: What to Do After a Mild TBI or Concussion

f your concussion symptoms are worsening significantly, aren't improving, or are interfering with your ability to function, it's a good idea to discuss them with an appropriate healthcare professional.

And if symptoms suddenly become severe or you develop concerning neurological symptoms, seek urgent medical evaluation.

Red flags can include things such as:

• A rapidly worsening or severe headache

• Repeated vomiting

• Increasing confusion

• Significant difficulty waking or staying awake

• Seizure

• New weakness or numbness

• Slurred speech

• Loss of consciousness

These symptoms should not simply be assumed to be a normal concussion flare. The CDC recommends urgent medical evaluation for concerning changes such as worsening headache, repeated vomiting, increasing confusion, unusual behavior, seizures, weakness/numbness, or loss of consciousness.

Frequently Asked Questions About Worsening Concussion Symptoms

Why are my concussion symptoms getting worse weeks later?

Symptoms can fluctuate during recovery. Physical or cognitive exertion, sleep disruption, increased activity, headaches, vestibular problems, autonomic symptoms, neck issues, and other factors may contribute. Persistent or significantly worsening symptoms should be discussed with a healthcare professional.

Is it normal for concussion symptoms to get worse before they get better?

Symptoms don't always improve in a straight line, and temporary increases can occur during recovery. However, significant or progressively worsening symptoms should not simply be dismissed as normal.

Why do I feel worse after exercise?

Your current exercise dose may exceed your present tolerance. Exercise intolerance can occur after concussion, and appropriately prescribed aerobic exercise is commonly incorporated into rehabilitation.

Why do my concussion symptoms come and go?

Symptoms can fluctuate based on physical and cognitive activity, sleep, stress, environment, and other individual factors. Looking for patterns can help identify what your current system tolerates.

Why am I getting headaches again after my concussion?

Headaches can have several possible contributors after concussion, including migraine, neck-related problems, exertion, sleep disruption, and other factors. Identifying the pattern of your headaches can help determine the appropriate approach.

Why am I dizzy again after my concussion?

Dizziness can involve the vestibular system, vision, neck, autonomic regulation, or other factors. If dizziness is persistent, an appropriate evaluation can help determine what may be contributing.

Should I stop exercising if my concussion symptoms get worse?

Not necessarily. The appropriate response depends on how much your symptoms increase, how long they remain elevated, and what type of activity triggered them. Completely avoiding activity isn't generally the long-term goal; a gradual, individualized return to activity is typically preferred.

How long will concussion symptoms last?

Recovery varies considerably. Many people improve within days or weeks, while a smaller group experiences symptoms that persist for months or longer.

What can I do if my concussion symptoms aren't improving?

If symptoms aren't improving, consider discussing them with a healthcare professional and looking at the different factors that may be contributing. Rehabilitation may involve appropriately progressed exercise, vestibular or visual strategies, addressing neck-related issues, sleep, pacing, and other individualized interventions.

Related Concussion Recovery Articles

If you're trying to understand why your symptoms are persisting or fluctuating, these articles may help:

Why Do I Still Have Concussion Symptoms Months Later?
Understand why symptoms can persist and why multiple systems may contribute.

Post-Concussion Autonomic Dysfunction: Symptoms, Causes & What Helps
Learn how autonomic symptoms and exercise intolerance may fit into the bigger picture.

Why Does Exercise Make My Concussion Symptoms Worse?
Understand why exercise can trigger symptoms and how to approach progression.

Why Am I Dizzy After a Concussion?
Explore vestibular, autonomic, neck-related, and other potential contributors to dizziness.

Screen Time After a Concussion: How Much Is Too Much?
Learn how to gradually return to screens without unnecessarily avoiding normal activity.

Why Do I Have Brain Fog After a Concussion?
Explore some of the factors that may contribute to persistent cognitive symptoms.

Ready for a More Structured Approach?

If you're tired of feeling like you're constantly guessing what you should and shouldn't be doing, The Concussion Solution gives you a structured path forward.

You don't have to figure out every exercise, activity level, and progression on your own.

The Concussion Solution

A step-by-step online concussion recovery program you can follow from home.