Persistent Post-Concussion Symptoms: The Overlooked Cause of Depression, Anxiety, and Brain Fog
Persistent post-concussion symptoms can trigger anxiety, depression, and brain fog. Discover how to heal your brain.
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Can a Mild Head Injury Cause Lasting Mood & Memory Problems?
It’s a harsh truth, but a single blow to the head can have a lasting impact on your life. After experiencing head trauma, a person who once enjoyed a lifetime of emotional stability, healthy energy levels, and mental clarity can sink into depression, addiction, brain fog, and more.
What’s especially troubling is the fact they many people don’t realize that a head injury is the source of their mental health issues. When they seek help for their problems, traditional treatments often fail because the underlying brain injury isn’t being treated.
This can lead to months, years, or even decades of emotional, behavioral, and cognitive problems that can sabotage your career, relationships, and health.
In this blog, you’ll discover just how common mild head injuries are, how to recognize persistent post-concussion symptoms, and what you can do about it.
Millions of people suffer from persistent post-concussion symptoms, which includes a wide range of cognitive and psychological issues. But most of them don’t realize that their mental health issues may be related to a mild head injury.
How Common Are Traumatic Brain Injuries (Tbi)?
Every year, over 2 million new head injuries are diagnosed in the U.S., and millions more go undetected. Traumatic brain injuries (TBI) are increasingly common among military personnel, with an estimated 67 percent of veterans experiencing at least one TBI.
The number of concussions is on the rise. Research shows that from 2010 to 2015, concussion diagnoses jumped 43 percent among the general population. among people ages 10 to 19 years of age, concussion diagnoses skyrocketed 71 percent.
Among Amen Clinics patients, mild head injuries are common. Based on the Amen Clinics database of nearly 300,000 brain SPECT scans, 40 percent of patients have suffered a brain injury. However, most of them don’t realize that their mental health issues may be related to a mild traumatic brain injury (mTBI) they suffered in the past.
Many people who sustain a concussion recover from their symptoms, but an alarming number of them may develop mental health issues that ruin their life and steal their happiness. There’s a strong connection between concussion and mental health issues.
In fact, millions of people struggle with persistent post-concussion symptoms (PPCS), formerly known as post-concussion syndrome.
Are you one of them? How can you know if you have lingering concussion symptoms? Look for these 10 common signs of post-concussion syndrome.
What Are Persistent Post-Concussion Symptoms?
1. Brain Fog
Following a head injury, you may feel confused or mentally fuzzy. Difficulties with problem-solving and reasoning are common complaints of post-concussion brain fog.
Some people experience a feeling that everything is “slowed down.” It may take you longer to read an article or book or to understand the content. You may find it hard to follow conversations, television shows, or directions.
2. Memory Problems
Memory loss can arise after experiencing a head injury. For example, you may have difficulty remembering new information.
It is also quite common to have trouble recalling the time period prior to the concussion. Some people experience memory lapses, forgetting parts of conversations or events.
3. Feeling Depressed
It’s common to experience emotional symptoms after concussion. In fact, depression is one of the most prevalent mental disorders associated with head injuries.
Research in the Journal of Neurotrauma shows that depression affects about 33 to 42 percent of people within the first year of experiencing a TBI.
The number of people developing major depressive disorder jumps to 61 percent within the first seven years after a TBI, according to the study’s findings.
Women are especially vulnerable to post-concussion depression. According to an analysis of nine studies, women are nearly 50 percent more likely than their male counterparts to develop depression after experiencing a concussion or other TBI.
If you’re experiencing depressive symptoms that don’t respond to traditional treatment, it’s worth investigating if an underlying concussion or TBI may be contributing to these issues.
4. Anxiety
Research shows that TBI patients are 1.9 times more likely to have anxiety than people who haven’t experienced a brain injury. Post-concussion anxiety issues may include:
- Generalized anxiety disorder
- Panic disorder
- Obsessive-compulsive disorder (OCD)
- Posttraumatic stress disorder (PTSD)
- Specific phobia
- Social anxiety disorder
Any anxiousness, nervousness, panic, obsessions, or compulsions that arise post-concussion deserve attention.
5. Focus and Attention Problems
If you have experienced a head injury, even if you don’t remember hitting your head, you may have difficulty paying attention, concentrating, of staying focused.
Completing projects, multitasking, or engaging in long conversations may be challenging. You may find yourself feeling restless or being easily distracted. Research shows there is an increased likelihood of developing attention deficit hyperactivity disorder (ADHD) after a TBI.
6. Substance Abuse
Findings in the Journal of Neurotrauma show that TBI can increase the use of alcohol or drugs in people who had no previous substance abuse. Drug or alcohol addictions also impede the recovery process after a head injury.
7. Aggression
One of the most common personality changes following a head injury is an increase in aggression. According to a study in The Journal of Neuropsychiatry and Clinical Neurosciences, nearly 30 percent of people with a first-time TBI experience post-concussion aggression.
Any increases in irritability, anger, or aggressive behavior could be a lingering symptom related to prior head trauma.
8. Fatigue
Being chronically tired and having a lack of energy are frequent complaints heard from people who have experienced concussions.
Many people assume their fatigue is related to stress, age, or other issues, so they don’t make the connection to a past brain injury.
9. Insomnia
Having trouble sleeping, whether it’s difficulty falling asleep or staying asleep, is a common post-concussion symptom. Poor quality sleep is often tied to the fatigue people experience.
10. Low Motivation
Along with a lack of energy, people who have suffered a TBI often notice a decline in motivation. Even if they had previously been a go-getter, they no longer have the get-up-and-go to actively pursue their goals at work or in life.
Patients at Amen Clinics whose brain scans show damage from head trauma often say they have been labeled as “lazy.”
If you have some of these symptoms, and especially if they aren’t responding to standard treatment, it’s critical to dig deeper to find the root cause.
HOW CAN BRAIN IMAGING HELP POST-CONCUSSION TREATMENT?
One of the biggest challenges with post-concussion symptoms is that they’re often invisible. You can look perfectly fine on the outside while struggling with brain fog, mood swings, headaches, or fatigue on the inside.
Traditional imaging tools like MRI or CT scans typically only show structural damage, such as bleeding or swelling, but they can miss the subtle functional changes that cause lingering symptoms.
At Amen Clinics, we use brain SPECT imaging to see how your brain is actually working. SPECT measures blood flow and activity patterns, revealing areas that are underactive (often linked to concentration problems and memory loss) or overactive (commonly tied to anxiety, depression, and irritability).
These scans frequently uncover hidden brain injuries that standard imaging cannot detect.
With this deeper level of insight, specialists can design a personalized post-concussion treatment plan to target your brain’s specific needs. This may include therapies that improve circulation and oxygenation, such as hyperbaric oxygen therapy (HBOT), along with neurofeedback, nutritional support, and strategies to calm overactive regions.
By addressing the precise areas of dysfunction, brain imaging helps guide healing, restore balance, and reduce persistent post-concussion symptoms.
You need a well-structured evening routine to help you prime both your body and brain for uninterrupted rest.
Align your mindset, habits, and environment so you can reduce stimulation and signal to your nervous system that it’s time to wind down. If you take small, intentional steps consistently, you can make a major difference.
Studies show that ideally, a sleep-supportive routine should start about two hours before bedtime. It will train your brain to associate these cues with rest and make it easier for you to fall and stay asleep. Below is a sample flow you can consider adapting:
FAQ ABOUT POST-CONCUSSION SYMPTOMS AND TREATMENT
1. How does Amen Clinics diagnose post-concussion syndrome?
At Amen Clinics, we go beyond symptom checklists. Using brain SPECT imaging, we can identify areas with abnormal activity caused by head trauma. These scans often reveal brain injury patterns that traditional MRI or CT scans miss, helping our clinicians link your emotional, cognitive, and behavioral symptoms to underlying brain changes.
2. What treatments does Amen Clinics offer for persistent post-concussion symptoms?
We create personalized, brain-based treatment plans that promote healing from the inside out. Depending on your scan results and full assessment, your plan may include hyperbaric oxygen therapy (HBOT) to improve blood flow, neurofeedback to retrain brain activity, nutritional and lifestyle support, targeted supplements, and psychotherapy to restore cognitive and emotional function.
3. Can people really recover from long-term post-concussion symptoms?
Yes. Healing is possible, even years after a concussion. Many Amen Clinics patients who struggled with fatigue, brain fog, mood changes, or focus problems for years have seen significant improvement after receiving proper diagnosis and targeted treatment. By addressing the brain directly, we help you regain clarity, energy, and emotional balance.
Concussions, TBIs, and the mental health issues associated with them can’t wait.
At Amen Clinics, we’re here for you. We offer a comprehensive Concussion Rescue treatment program, in-clinic brain scanning and appointments, as well as mental telehealth, clinical evaluations, and therapy for adults, teens, children, and couples.
Speak to a specialist today at 888-288-9834 or visit our contact page here.
Amen Clinics
Founded in 1989 by double-board certified psychiatrist and neuroscientist Daniel G. Amen, MD, Amen Clinics Inc. (ACI) is known as the best brain and mental health company in the world. Our clinical staff includes over 50 healthcare specialists, including adult and child psychiatrists, integrative (functional) medicine physicians, naturopaths, addiction specialists, forensic psychiatrists, geriatric psychiatrists, nutritionists, licensed therapists, and more. Our clinicians have all been hand-selected and personally trained by Dr. Amen, whose mission is to end mental illness by creating a revolution in brain health. Over the last 35-plus years, ACI has built the world’s largest database of functional brain scans—over 250,000 SPECT scans on patients from 155 countries—related to how people think, feel, and behave.
References
Brain Injury Association of America. Incidence of Traumatic Brain Injury in Military Service Members Receives Widespread Media Coverage. Dec. 17, 2024.
Morgan, K. Why childhood concussion diagnoses have skyrocketed. USA Today. Jan. 24, 2019. https://www.usatoday.com/story/sponsor-story/blue-cross-blue-shield-association/2019/01/24/why-childhood-concussion-diagnoses-have-skyrocketed/2658679002/
Fann, Jesse R et al. “Treatment for depression after traumatic brain injury: a systematic review.” Journal of neurotrauma vol. 26,12 (2009): 2383-402. doi:10.1089/neu.2009.1091
American Association of Anesthesiologist. Women at much higher risk of depression after traumatic brain injury, analysis finds. Oct. 15, 2023. https://www.asahq.org/about-asa/newsroom/news-releases/2023/10/women-at-much-higher-risk-of-depression
Dehbozorgi, M., Maghsoudi, M.R., Mohammadi, I. et al. Incidence of anxiety after traumatic brain injury: a systematic review and meta-analysis. BMC Neurol 24, 293 (2024). https://doi.org/10.1186/s12883-024-03791-0
Schachar RJ, Park LS, Dennis M. Mental Health Implications of Traumatic Brain Injury (TBI) in Children and Youth. J Can Acad Child Adolesc Psychiatry. 2015 Fall;24(2):100-8. Epub 2015 Aug 31. PMID: 26379721; PMCID: PMC4558980.
Bjork, James M, and Steven J Grant. “Does traumatic brain injury increase risk for substance abuse?.” Journal of neurotrauma vol. 26,7 (2009): 1077-82. doi:10.1089/neu.2008.0849
Rao, Vani et al. “Aggression after traumatic brain injury: prevalence and correlates.” The Journal of neuropsychiatry and clinical neurosciences vol. 21,4 (2009): 420-9. doi:10.1176/jnp.2009.21.4.420
