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The Impact of Head Injuries on Personality Changes, Depression, and Suicidal Ideation


For an extended period, ranging from months to even years, after experiencing a brain injury, individuals face an elevated risk of depression and suicidal thoughts.

Laura Kimbro cradled her son in her arms just moments after he had taken his life, convinced that he did not genuinely want to die.

Almost two years earlier, Seth Kimbro had stared at his parents in fear, asking, “Am I going to die?” after a frightening accident where he collided into a large mailbox that was partially obscured by tall weeds while riding in a utility task vehicle.

The 22-year-old suffered a severe injury, resulting in a significant wound on his shattered chin, fractures in his jaw, and damaged teeth. Fortunately, both CT and MRI scans revealed no indications of physical brain damage, bringing relief to the family. They shifted their focus to the lengthy process of physical recovery, leaving concerns about brain injuries aside.

“When they informed us that he had no brain damage, I felt such relief, especially since his head took the brunt of the impact. I was overwhelmed with gratitude, saying, ‘Thank you, God.’ I even got down on my knees to pray and express my thanks,” Mrs. Kimbro recounted to The Epoch Times.

According to all accounts, Seth was making impressive progress in his recovery. Although he had lost weight due to having his jaw wired shut, he was regaining muscle and—seemingly—confidence. He had met a woman, proposed to her, and moved in together. He was excited about a new job and eagerly anticipated his sister’s wedding.

However, subtle signs indicated that Seth was not entirely emotionally and mentally at ease. He confided in his mother, who promptly scheduled the earliest appointment for him to see a therapist, unfortunately, not for another 24 days. Tragically, Seth took his life just six days before the appointment.

Seth left no note, but a series of clues revealed that he had been battling with post-concussion syndrome (PCS) depression, a condition that can affect up to 30 percent of individuals who have sustained concussions.
Seth Kimbro, photo taken on January 27, 2021, prior to the accident. (Photo by Laura Kimbro)

Seth Kimbro, photo taken on January 27, 2021, before the accident.Photo by Laura Kimbro

PCS can manifest through symptoms such as brain fog, migraines, nausea, memory issues, and blurred vision. This condition can coexist with PCS depression, resulting in personality shifts that make it challenging for individuals to reconcile their former selves with their new post-injury identities, along with the potential for suicidal thoughts.

Approximately 25 percent of patients with traumatic brain injuries report experiencing suicidal thoughts—a rate that is nearly seven times higher than that of the general population—and this risk remains elevated for several years. However, according to the World Health Organization, two-thirds of those with suicidal ideations never attempt suicide.

Identifying PCS is often challenging through standard screenings, as patients may hesitate to discuss their symptoms due to feelings of shame. Nonetheless, experts assert that effective healing from the injury and associated depression is possible.

“It’s a complex injury because it is so often invisible and can be misinterpreted,” neuropsychologist Alina Fong explained to The Epoch Times.

A Different Type of Brain Injury

Concussions are categorized as mild forms of traumatic brain injuries (TBIs) that can either heal within minutes or take months to recover from. They can be caused by direct head impacts—such as from sports or vehicular accidents—or by violent shaking. Loss of consciousness may not always occur, but the individual’s state of awareness can shift, leading to disorientation or confusion.

Symptoms of depression tend to be most intense in the initial two weeks after a concussion but can linger for months or even years afterwards.

Severe TBIs can impact cognitive capabilities, behavior, or physical functions, resulting in either short-term or long-lasting brain damage, and have long been associated with an increased risk of suicide. The anecdotal evidence suggesting even mild TBIs can elevate the risk of depression and suicide has prompted researchers to delve deeper into the data.

While suicides following concussions are infrequent, accounting for fewer than 1 percent of those affected, individuals diagnosed with mild TBIs or concussions were found to be twice as likely to die by suicide compared to those without brain injuries, based on a systematic review and meta-analysis published in JAMA Neurology that examined 700,000 cases.
This investigation identified several mechanisms related to concussions that may contribute to suicidal behavior:

  • Abnormal neural connectivity in brain regions responsible for cognitive and emotional processing
  • Neuropsychological deficits correlated with clinical depression
  • Progressive brain damage caused by the accumulation of phosphorylated tau—a protein associated with Alzheimer’s disease—around blood vessels and within brain folds

These mechanisms are more functional than structural and are often not detectable through standard imaging tests, similar to Seth’s case.

Fong detected this pattern early in her career while working with war veterans at Veterans Affairs Health Care, where many displayed normal MRI results yet experienced a range of symptoms. This surge in cases resulted from improved survival rates following blasts, likely due to superior military equipment and medical intervention. Nevertheless, many veterans were left grappling with symptoms often misdiagnosed as psychological issues, with insufficient attention paid to potential brain injuries, she noted.

“Some medical gaslighting takes place with numerous brain-injured patients, affecting individuals of all genders and ages,” she remarked.

The absence of functional scans in typical clinical settings can result in misdiagnosis, according to Fong. Additionally, many patients may score within normal parameters on cognitive tests since they can concentrate and focus for brief periods but struggle to maintain that focus long-term.

Clinical Tools May Identify Risk

It is possible that PCS depression is often overlooked because its symptoms can overlap with those of the concussion itself. However, research suggests that patient screening and evaluations—not routinely performed—could help identify those most at risk.

In a study published in Brain Research, 35 college athletes underwent neuropsychological screenings—assessments of brain functions such as memory, attention, language, and problem-solving skills—and electroencephalography (EEG). The researchers observed notable differences between participants suffering from both concussion and depression.

Those with both conditions scored significantly worse on the screenings compared to individuals with only a concussion or depression. Additionally, participants with a history of both conditions exhibited altered alpha band synchronization on EEG, indicating poor communication among brain regions.

The authors suggested that EEG and neuropsychological screenings could serve as objective measures for individuals experiencing depression following a concussion.

In a separate study published in JAMA Network Open, researchers compared data from children aged 5 to 18 who suffered concussions with those who sustained orthopedic injuries and discovered significantly higher risks for mental health disorders, psychiatric hospitalization, and self-harm in the concussion group.

“Our findings indicate that during follow-up visits for concussions, healthcare providers should assess the mental health of their patients. Collaborative care and mental health treatment have been demonstrated to enhance outcomes for pediatric concussion patients exhibiting chronic symptoms,” the authors concluded.

Healing is Possible

Anessa Arehart’s recovery exemplifies an essential aspect of PCS depression—while healing can be a gradual, frustrating, and isolating journey, it can also be liberating.

After experiencing two severe car accidents within 53 days, Arehart developed debilitating headaches. She recounted to The Epoch Times that following the second accident, she was unable to write her name. Brain imaging revealed extensive damage, notable bruising, and swelling. However, it wasn’t until a year later that a neurologist notified her about PCS.

“I hardly remember much of the last decade,” Arehart shared. “I felt disconnected from my own body. I fell into a deep depression because I am usually an outgoing, joyful person. The depression was overwhelming; I reached a point where I felt I couldn’t continue living.”

Although therapy helped her learn to forgive the drivers involved in the accidents, she discovered that her brain began to mend during lengthy walks in nature. These outdoor experiences became so crucial that she chose to live in a tiny home built on 50 acres, allowing her to immerse herself in nature.

“Sitting in the woods made me feel nurtured, comforted, and calmed. I often encountered things that symbolized rebirth, healing, or the promise of better times ahead. Nature provided gentle reminders that instilled hope during moments when my headache was excruciating,” Arehart reflected.

She has since relearned painting, her passion, and authored two books about her journey to inspire others. One of these is a coffee table book featuring her nature photography, taken daily to help commemorate her experiences and facilitate her healing process.

Fong observed that intensive therapy can accelerate recovery, enabling patients to return to their normal activities more swiftly—and often in a more convenient manner.

At Fong’s clinic, patients complete therapy within a two-week timeframe, dedicating entire days to on-site treatments. The program includes exercises targeting cognition, brain-muscle coordination, vision, balance, and sensory integration, in addition to a psychological component to assist those grappling with depression and suicidal thoughts.

Regardless of the healing path chosen, Fong emphasized the importance of having a professional—preferably one familiar with PCS—available for support during times of suicidal ideation.

She provided several strategies for managing depression and suicidal thoughts:

  • Engage in daily conversations with someone.
  • Establish a daily schedule—this aids the brain—and adhere to it.
  • Devise a safety plan detailing what actions to take during moments of suicidal thoughts, including emergency contacts for when these feelings persist.
  • Stay physically active and exercise regularly.
  • Identify a safe space where you can retreat to cope with overwhelming feelings.

Fong also advised avoiding:

  • Extended periods of solitude
  • Alcohol, which can lead to lethargy, impulsivity, and depressive symptoms
  • Drugs, including cannabis if feasible
  • Activities known to exacerbate negative feelings, such as unproductive reminiscing
  • Ruminating on suicidal thoughts, which can intensify them

Attempting to suppress suicidal thoughts completely may have counterproductive effects, Fong cautioned.

“Those thoughts are a normal reaction. They don’t need to signify anything,” she said. “Acknowledge the thought, accept it, and then let it pass. Engage in a distraction; watch a movie or explore a new hobby.”

Signs of PCS

How can you recognize if you’re facing PCS? Any significant impact or violent shaking of the head may lead to post-concussion syndrome. Symptoms typically fall into four categories:

Physical

  • Difficulties with balance
  • Heightened sensitivity to light or sound
  • Headaches
  • Visual disturbances, such as blurriness
  • Fatigue and drowsiness
  • Nausea or vomiting at the onset of the injury

Cognitive

  • Challenges with concentration
  • Slower processing speed
  • Difficulty retaining new information
  • Brain fog or unclear thought processes

Emotional

  • Feelings of sadness, irritability, anxiety, or panic
  • Challenges regulating emotions or experiencing heightened emotions
  • Loss of interest in previously enjoyable activities

Sleep

  • Sleeping significantly more than usual
  • Sleeping significantly less than usual
  • Struggles with falling asleep
  • Difficulty returning to sleep
  • Racing thoughts that hinder sleep

‘Giving Light to Darkness’

Upon reviewing her son’s phone after his death, Mrs. Kimbro realized that his struggles were more profound than anyone had understood, and his symptoms corresponded with PCS. He had documented reasons for his self-hatred and feelings of hopelessness, which contrasted starkly with his outward persona, which projected faith.

Even when her daughter alerted the Kimbros about a concerning phone call from Seth—one indicating he was greatly distressed and struggling that evening—Mrs. Kimbro did not consider the possibility that he would take his own life. She found it hard to digest the news when an officer contacted them while they were on the way to Seth’s home to deliver the tragic news.

“The thought of suicide did not cross my mind. If you knew Seth, he was full of life, so nothing about this made sense,” she reflected.

The overwhelming grief of arriving too late is a burden the family is determined others should not have to bear.

Since then, Mrs. Kimbro has committed herself to understanding the condition better and sharing information about PCS and suicidal thoughts in medical clinics. She authored a book detailing their story entitled “Giving Light to Darkness,” and the family actively works to ensure Seth’s memory continues to shine brightly.

“There was a time when I felt anger towards God after losing Seth,” Mrs. Kimbro shared. “But I eventually recognized that He had actually helped Seth. God granted us 22 months with him. He had the opportunity to make future plans, met a wonderful girl, and proposed to her. Many people do not get to enjoy those moments in life, and Seth was fortunate enough to experience that.”

If you or someone you know is facing suicidal thoughts, please reach out for help. You are not alone, and support is within reach. For immediate assistance, contact a mental health professional or call a crisis line.

In the United States, you can dial or text 988 to reach the Suicide & Crisis Lifeline, which is available 24/7.



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