Lyme, POTS, and Adrenaline Surges Explained

It starts the moment you stand. Your heart races — or sometimes it doesn’t — but you still feel that surge of adrenaline. Your hands tremble, your chest tightens, and your body reacts as if you’ve just run a sprint. Then, when you sit back down, the feeling slowly fades.

For many patients with Lyme disease and hyperadrenergic POTS, this isn’t anxiety or stress. It’s the body’s autonomic nervous system locked in a “fight or flight” mode. This form of dysautonomia, often triggered by Lyme disease, causes adrenaline surges, dizziness, and a body that won’t settle down.

What Is POTS and How It Relates to Lyme Disease

POTS, or Postural Orthostatic Tachycardia Syndrome, affects the autonomic nervous system, which regulates heart rate, blood pressure, and circulation. When you stand, your body should automatically adjust blood flow to your brain.

In POTS, that adjustment falters. Some patients develop a sharp rise in heart rate — 30 beats per minute or more within minutes of standing — while others have little or no tachycardia, yet experience the same adrenaline surge, dizziness, and internal vibration.

Hyperadrenergic POTS is a specific type of POTS characterized by excessive sympathetic (“fight-or-flight”) nervous system activity when standing. It’s often associated with high levels of norepinephrine (a stress hormone) in the blood upon standing.

In Lyme and hyperadrenergic POTS, the defining feature isn’t always heart rate. It’s the excess release of norepinephrine. Your body behaves as though it’s under attack when you’re simply standing still.

How Lyme Triggers Hyperadrenergic POTS

Lyme disease can inflame or damage the small nerve fibers that regulate automatic body functions. When this system is disrupted, the sympathetic (“fight or flight”) pathway becomes locked in high gear.

Even after the infection clears, the nervous system may take time to recalibrate. This doesn’t always mean persistent infection — it can reflect post-infectious autonomic imbalance, which often improves as the system heals.

Not every POTS patient has a racing heart—some just have a racing nervous system.

Recognizing the Pattern

Patients with Lyme and hyperadrenergic POTS often describe a body that overreacts to everyday situations. Standing up to make coffee, walking across a room, or even mild warmth can trigger a rush of adrenaline. Their pulse may or may not jump dramatically, but their bodies respond as if they’ve just run a marathon.

They describe trembling hands, a sense of internal vibration, or waves of heat that come from nowhere. Some feel dizzy or faint; others feel flushed and wired. Many experience brain fog or headaches, as if the nervous system can’t decide whether to accelerate or slow down.

The pattern is familiar: small triggers, big reactions, and a body that won’t settle back down. Heat, dehydration, or stress can magnify symptoms.

For patients living with Lyme and hyperadrenergic POTS, understanding that these reactions are physiologic, not psychological, often changes everything. It replaces self-doubt with validation.

Finding Calm After Chaos

For many, the hardest part is being told “it’s all in your head.” But POTS is real and measurable. Recognizing the connection between Lyme disease and autonomic imbalance is the first step toward understanding why the body feels stuck in overdrive.

Recovery takes time. As inflammation subsides and the nervous system finds stability, adrenaline surges become less frequent, the heart steadies, and daily life begins to feel normal again.

Clinical Takeaway

Hyperadrenergic POTS in Lyme disease patients represents autonomic nervous system dysfunction triggered by infection-related small fiber neuropathy, requiring clinical recognition that physiologic symptoms are frequently misattributed to anxiety. Critical diagnostic and management considerations:

• Excessive norepinephrine release upon standing defines hyperadrenergic POTS—while classic POTS requires heart rate increase of 30+ bpm within 10 minutes of standing, hyperadrenergic patients may demonstrate minimal tachycardia yet experience profound sympathetic surges (trembling, internal vibration, chest tightness, waves of heat) reflecting catecholamine excess rather than heart rate elevation alone
• Lyme disease damages autonomic small nerve fibers that regulate vascular tone and sympathetic response—inflammation of these nerves locks the sympathetic (“fight or flight”) pathway in overdrive, creating disproportionate physiologic responses to benign postural changes that patients cannot voluntarily control despite appearing anxious
• Post-infectious autonomic imbalance often persists after infection clearance—continued POTS symptoms do not necessarily indicate active Borrelia infection but rather reflect autonomic nervous system recalibration that can require months to years, particularly when small fiber damage was severe or prolonged before treatment initiation
• Clinical validation prevents psychiatric misattribution—recognizing hyperadrenergic POTS as measurable dysautonomia (elevated standing norepinephrine, abnormal autonomic testing) rather than anxiety disorder transforms patient experience from self-doubt to informed self-advocacy, improving treatment compliance and reducing iatrogenic harm from inappropriate psychiatric medication escalation

Frequently Asked Questions

What is hyperadrenergic POTS?

Hyperadrenergic POTS is a form of dysautonomia characterized by excessive release of norepinephrine upon standing. It causes adrenaline surges, trembling, dizziness, and a body locked in “fight or flight” mode — even without significant heart rate changes.

Can Lyme disease cause POTS?

Yes. Lyme disease can inflame or damage the small nerve fibers that regulate automatic body functions. When this system is disrupted, the sympathetic nervous system can become locked in high gear, triggering autonomic dysfunction including POTS.

What does a POTS episode feel like?

Patients describe a rush of adrenaline upon standing — trembling hands, internal vibration, chest tightness, waves of heat, dizziness, and brain fog. Small triggers like standing up or mild warmth can produce reactions that feel like running a sprint.

Is POTS from Lyme disease psychological?

No. POTS is a real, measurable autonomic disorder. The adrenaline surges, heart rate changes, and dizziness are physiologic — not anxiety. Many patients are initially misdiagnosed with anxiety before receiving a correct diagnosis.

Does POTS from Lyme disease go away?

For many patients, yes. As inflammation subsides and the nervous system recalibrates, adrenaline surges become less frequent and daily life begins to normalize. Recovery takes time and may reflect post-infectious autonomic imbalance rather than persistent infection.

Related Reading

POTS Basics

• What Is POTS (Postural Orthostatic Tachycardia Syndrome)?
• POTS in Lyme Disease: An Autonomic Disorder Explained

Related Conditions

• Autonomic Dysfunction and Lyme Disease
• Brain Fog in Lyme Disease
• Medical Dismissal and Lyme Disease
• Complete Guide to Lyme Disease Symptoms