What Is Post-Concussion Syndrome and How Do You Know If You Have It?
Still having symptoms weeks after a head injury? It may be time to see a doctor.
A concussion is often described as a short-term injury. You hit your head, take it easy for a little while and then move on. But for some people, recovery is not that simple. Weeks after the injury, headaches may linger, thinking may feel slower and everyday tasks can still be overwhelming.
If concussion symptoms do not go away as expected, it can mean you have post-concussion syndrome. Understanding what this is can help you recognize when it may be time to seek extra support.
What Is Post-Concussion Syndrome?
Post-concussion syndrome refers to symptoms that last longer than the typical recovery window (around 4 weeks) after a concussion or mild traumatic brain injury. This condition doesn’t always match the severity of the original injury. A mild concussion can still lead to long-lasting symptoms, while someone with a more serious injury may recover quickly.
“Post-concussion syndrome is not about how hard you hit your head, it is about how the brain responds afterward,” said Adrian Burgos MD, PIH Health neurologist. “When symptoms linger beyond the usual healing period, that is a sign patients should be evaluated and supported rather than trying to push through on their own.”
How Common Is Post-Concussion Syndrome?
Post-concussion syndrome is more common than many people realize. Studies suggest that about 10 to 20 percent of people who have a concussion develop symptoms that linger.
Certain factors may increase the risk, including:
- A history of previous concussions
- Migraines or frequent headaches
- Anxiety, depression, or high stress levels
- Poor sleep during recovery
Children and older adults may also take longer to bounce back after a head injury.
What Are the Signs of Post-Concussion Syndrome?
Symptoms can vary widely. Some people notice physical symptoms first, while others struggle more with thinking or mood changes. Common symptoms include:
- Ongoing headaches
- Dizziness or balance problems
- Sensitivity to light or noise
- Fatigue that doesn’t improve with rest
- Trouble focusing or multitasking
- Feeling mentally foggy or slow
- Memory lapses or forgetfulness
- Irritability or mood swings
- Anxiety or feeling down
- Trouble falling or staying asleep
If these symptoms last for weeks after a concussion and interfere with daily life, post-concussion syndrome may be the cause.
How Is Post-Concussion Syndrome Diagnosed?
There is no single test that confirms post-concussion syndrome. Doctors diagnose it by reviewing your symptoms, medical history and details about the head injury. A physical and neurological exam is usually done. Imaging tests like CT scans or MRIs may be done but they are often normal. While this can be frustrating, it does not mean symptoms are imagined. The condition is diagnosed based on how you feel and function, not just test results.
Tips to Help Manage Post-Concussion Syndrome
Recovery takes time, but certain habits can support healing and reduce symptom flare-ups:
- Slow things down: Avoid pushing through symptoms and build activities back gradually.
- Prevent another injury: Avoid high-risk activities until cleared by a healthcare provider.
- Prioritize sleep: Aim for consistent bed and wake times and limit screen use at night.
- Move gently: Light exercise, such as walking, may help once approved by your doctor.
- Lower stress: Deep breathing, stretching, or quiet breaks can ease symptoms.
- Follow treatment plans: Physical therapy, vision therapy, or counseling may be recommended for specific symptoms.
When to Seek Medical Care
If symptoms are getting worse, lasting longer than expected or affecting work, school or relationships, it’s important to check in with a healthcare provider. Most people do improve over time and with proper care, but early guidance can help prevent setbacks and rule out other causes.
