Understanding TBI, Dysautonomia, and POTS

Greetings!

When people think about traumatic brain injury (TBI), they often think of headaches, dizziness, or memory problems. But for some patients, the effects of a brain injury extend deeper—into the autonomic nervous system, which controls automatic functions like heart rate, blood pressure, breathing, and temperature.

When this system is disrupted, a condition known as dysautonomia can develop. One common form is Postural Orthostatic Tachycardia Syndrome (POTS).

How TBI Can Affect the Autonomic System

The brain helps regulate how the body responds to standing, movement, and stress. After a brain injury, these signals may not communicate efficiently, which can lead to symptoms such as:

• Rapid heart rate when standing
• Lightheadedness or fainting
• Severe fatigue
• Brain fog and difficulty concentrating
• Exercise intolerance

In many cases, these symptoms appear weeks or months after the injury, making the connection easy to overlook.

The Numbers May Surprise You

Autonomic dysfunction after brain injury is more common than many people realize.

• Studies suggest 30–60% of individuals with TBI experience some form of autonomic dysfunction during recovery.
• POTS affects an estimated 1–3 million people in the United States, and neurological injury is one potential trigger.

For patients experiencing unexplained symptoms, these statistics can provide an important piece of the puzzle.

A Story of Finding Answers

For Eduardo and his wife, the search for answers was long and frustrating. After her traumatic brain injury, she developed symptoms that were eventually recognized as POTS.

Eventually they found a team willing to look deeper.

After beginning treatment, they started to see meaningful progress.

Understanding the Root Cause

Conditions like dysautonomia and POTS often reflect a breakdown in communication between the brain and the body’s automatic systems. When those pathways improve and the brain begins regulating these systems more effectively, patients may begin to see meaningful improvements.

For many people, simply understanding why these symptoms are happening is the first step toward recovery.

As Eduardo shared,

Why This Matters

For individuals experiencing unexplained symptoms after a brain injury, autonomic dysfunction may be an important piece of the puzzle. Understanding how the brain and body communicate—and where that communication may be disrupted—can often be the first step toward meaningful recovery.