When It’s Not “Just Anxiety”: When the Nervous System Can’t Regulate

There’s a point many people reach where the symptoms feel overwhelming—but don’t quite make sense.

You or your child might experience:

• heart racing out of nowhere

• dizziness or feeling faint

• shakiness, nausea, or weakness

• sudden waves of panic

• a constant sense of being on edge

And often, you’re told:

• “It’s anxiety”

• “It’s panic attacks”

• “They’re just sensitive or stressed”

But for some people, it’s not just anxiety.

It’s a nervous system that is stuck in overdrive—reacting as if there’s a threat, even when there isn’t.

What is POTS / dysautonomia (in real-life terms)?

Postural Orthostatic Tachycardia Syndrome is one type of dysautonomia, which simply means the automatic nervous system isn’t regulating the way it should.

This system controls things like:

• heart rate

• blood pressure

• temperature

• digestion

• how your body responds to stress

There are several types of dysautonomia, including:

• Neurocardiogenic Syncope (common fainting episodes)

• Orthostatic Hypotension

• Inappropriate Sinus Tachycardia

• Autonomic Neuropathy

I’m focusing on POTS here because:

• it is one of the most common forms, especially in teens and young adults

• it is frequently mistaken for anxiety

• and it often overlaps with hypermobility, MCAS, and neurodivergence—which many families are already navigating

What happens in POTS

In POTS, when someone stands up, their body has trouble moving blood efficiently, especially to the brain.

To compensate, the heart starts racing.

What that actually feels like

This isn’t just a number on a monitor.

It can feel like:

• your heart is pounding or racing

• you might pass out

• your body suddenly feels weak or shaky

• your brain feels foggy or disconnected

And because the body is sending “something is wrong” signals, the brain often interprets it as:

👉 panic

Why it looks so much like anxiety

This is one of the most important parts to understand.

The symptoms of POTS can look almost identical to anxiety or panic attacks:

• racing heart

• shortness of breath

• dizziness

• chest discomfort

• feeling overwhelmed or out of control

But the order is often reversed.

With anxiety:

• thoughts → fear → body response

With POTS:

• body response → brain tries to make sense of it → anxiety follows

The nervous system piece most people miss

When the autonomic nervous system is dysregulated, the body can get stuck in:

• fight (on edge, reactive, irritable)

• flight (restless, anxious, can’t settle)

• freeze (shut down, fatigued, overwhelmed)

This can show up as:

• a strong startle response

• reacting intensely to small stimuli

• appearing fearful or overwhelmed by everything

• a brain that feels constantly on alert (hypervigilance)

👉 From the outside, this can look like:

• anxiety

• sensory sensitivity

• emotional reactivity

But underneath, the nervous system is:
misreading internal signals as danger

How common is it?

POTS is increasingly recognized, especially in adolescents and young adults.

• Estimates suggest ~1–3 million people in the U.S. may have POTS

• It is more common in:

  • teens and young adults

  • females

  • individuals with overlapping conditions

In kids, it often shows up during:

• growth spurts

• puberty

• periods of stress or illness

The overlap most families aren’t told about

POTS often doesn’t exist on its own.

🔗 Hypermobility (flexible joints)

There is a strong connection between POTS and:

• Hypermobility Spectrum Disorder

• Hypermobile Ehlers-Danlos Syndrome

Looser connective tissue can make it harder for blood vessels to:

• tighten properly

• move blood efficiently

🧠 Neurodivergence

POTS is also more common in individuals who:

• are highly sensitive to their environment

• have ADHD or autism

• experience strong sensory input

🧪 MCAS (immune system reactivity)

POTS frequently overlaps with mast cell activation, which can add:

• flushing

• GI symptoms

• increased reactivity

👉 These systems often interact and amplify each other

Why getting a diagnosis can matter

For many families, identifying POTS is a turning point—not because symptoms disappear overnight, but because they finally make sense.

1. It explains why anxiety treatment didn’t fully work

Some people have done everything “right” for anxiety—therapy, medication, coping skills—and still feel like something isn’t fully clicking.

That’s because the body is still sending:
“something is wrong” signals

2. It shifts the focus from “calm down” to “support the body”

Instead of telling someone to:

• relax

• breathe through it

Treatment can include:

• hydration and salt support

• medications when needed

• physical strategies to support blood flow

3. It reduces fear and confusion

Understanding POTS helps reframe:

“I’m not in danger—my body is misfiring”

4. It helps kids feel safer in their bodies

Kids may:

• avoid standing

• struggle with school stamina

• seem anxious or reactive

But often, they’re responding to:
real physical sensations

5. It opens the door to effective support

Treatment may include:

• fluids and electrolytes

• compression

• pacing activity

• medication when needed

6. It connects the full picture

POTS often overlaps with:

• hypermobility

• MCAS

• chronic fatigue

• neurodivergence

A grounded takeaway

POTS and dysautonomia can be confusing because they don’t always look the way people expect.

They can look like anxiety.
They can feel like panic.
They can show up as fear, overwhelm, or shutdown.

But sometimes, it’s not anxiety.

It’s a nervous system that is trying to regulate—and struggling to do it.

If you or your child experience symptoms that feel like anxiety but don’t fully respond to typical approaches, it’s reasonable to ask:

“Is my nervous system getting the support it actually needs?”

Because sometimes, the issue isn’t emotional.

It’s physiological.