Think You’re in the Clear After a Concussion? Why Lingering Symptoms and ATP Deficits Make You Vulnerable to a Second Brain Injury in Kansas City

Just because symptoms fade doesn't mean your brain is fully recovered. In this post, Kansas City chiropractor Dr. Lance Stevenson breaks down how hidden ATP deficits after a concussion can leave patients in Lee’s Summit, Grandview, and Raytown more vulnerable to a second brain injury.

Lance Stevenson, DC

10/26/20252 min read

Think You’re in the Clear After a Concussion? Why Lingering Symptoms and ATP Deficits Make You Vulnerable to a Second Brain Injury

If you’ve suffered a concussion and your symptoms are starting to fade, you might feel like you’re finally in the clear. But don’t let temporary relief fool you. Just because you feel “better” doesn’t mean your brain has fully healed. In fact, this is one of the most dangerous times for those recovering from a traumatic brain injury (TBI)—especially in active individuals or those who’ve been in car accidents around Kansas City, Overland Park, or Lee’s Summit.

The Danger of the Silent Recovery Phase

A concussion causes a cascade of changes in the brain, including inflammation, blood-brain barrier disruption, and a significant drop in cellular energy—known as an ATP deficit. ATP is the fuel your brain cells need to function, and research shows that ATP production can remain impaired for days or even weeks after the initial impact.

Even if your headache fades or your dizziness improves, your brain is still working overtime to stabilize its internal chemistry. This “silent phase” of recovery is when you’re most vulnerable. A second concussion during this period—before ATP levels normalize—can lead to severe, long-lasting, or even catastrophic outcomes.

Second Impact Syndrome: When One Hit Becomes Life-Threatening

Getting a second concussion before your brain has fully healed can result in something called Second Impact Syndrome (SIS). This rare but often fatal condition causes rapid swelling of the brain, often without warning. The risk is higher in teenagers and young adults, but it can happen to anyone—especially those returning to sports, work, or driving too soon after a head injury.

At our Kansas City concussion clinic, we’ve seen patients from Shawnee, Blue Springs, and even Liberty who believed they were fine—only to experience worsening symptoms weeks later because they pushed too hard, too soon.

ATP Deficits Don’t Just Go Away

ATP (adenosine triphosphate) powers every cell in your body, but your brain is especially dependent on it. After a concussion:

  • Mild TBIs can reduce ATP by 20%

  • Severe TBIs can slash ATP by 50% or more

  • Back-to-back concussions can stack these deficits, creating a metabolic crisis

That’s why it’s crucial to avoid additional brain trauma while the brain is still recovering. Feeling “okay” isn’t enough. You need objective testing, neurological evaluation, and clinical decision-making to truly determine whether your brain is ready to handle stress again.

Why Kansas City Chooses Lance Stevenson, DC for Concussion Care

If you’ve experienced a concussion—whether from a car accident in Grandview or a fall in Parkville—you need more than rest and guesswork. At our clinic, we specialize in concussion care and post-TBI rehabilitation. We use evidence-based methods to track your recovery, support your brain’s healing process, and reduce your risk of long-term damage.

When it comes to head injuries, a second concussion is not just another bump—it could be catastrophic.

Special thanks to Complete Concussions for their training and educational resources. To learn more about comprehensive concussion treatment options, visit completeconcussions.com.

Disclaimer:

This blog is for educational purposes only and is not intended to diagnose, treat, or replace medical advice. If you have experienced a concussion or other injury, please consult a qualified healthcare provider. Always follow the advice and treatment plan given by your medical professional.


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