Sleep Problems in POTS: Why Good Sleep Can Feel So Hard to Achieve

For many people living with Postural Orthostatic Tachycardia Syndrome (POTS), fatigue is one of the most disabling symptoms they experience. While fatigue is often viewed as a direct consequence of autonomic dysfunction, many individuals with POTS also struggle with significant sleep difficulties that can further worsen daytime exhaustion, brain fog, pain, mood, and quality of life.

Unfortunately, sleep problems in POTS are often overlooked. Patients may be told that they "should be sleeping enough" because they spend adequate time in bed, yet still wake feeling unrefreshed and exhausted.

How Common Are Sleep Problems in POTS?

Research consistently shows that sleep disturbances are extremely common in people with POTS. Studies have found higher rates of insomnia symptoms, poor sleep quality, excessive daytime sleepiness, and non-restorative sleep compared with healthy individuals. Many people with POTS report that they wake feeling as tired as when they went to bed, regardless of how many hours they have slept.

Objective sleep studies have also demonstrated measurable differences in sleep quality. Compared with healthy controls, people with POTS often experience reduced sleep efficiency, more fragmented sleep, and alterations in normal sleep architecture.

Common Sleep Problems in POTS

Difficulty Falling Asleep

Many people with POTS describe feeling "tired but wired." Although physically exhausted, they may experience elevated heart rate, palpitations, temperature dysregulation, or heightened physiological arousal that makes it difficult to drift off to sleep.

Research suggests that autonomic nervous system dysregulation may contribute to this experience. Some studies have found associations between increased heart rate activity and poorer sleep quality in POTS.

Frequent Night-Time Awakenings

Waking repeatedly during the night is another common complaint. Some individuals report waking with a racing heart, feeling overheated, needing to urinate, or simply becoming alert for no obvious reason. These interruptions can prevent the brain from progressing through deeper stages of restorative sleep, leaving individuals feeling unrefreshed the following day.

Non-Restorative Sleep

Perhaps the most frustrating symptom is non-restorative sleep. Even after a full night's sleep, many people with POTS wake feeling as though they have barely slept at all.

Studies have found that people with POTS frequently report poor subjective sleep quality, even when objective sleep measures appear only mildly impaired. This suggests that both sleep physiology and the body's perception of sleep quality may be affected.

Excessive Daytime Sleepiness

Sleepiness and fatigue are related but distinct experiences, and many people with POTS experience both. Sleepiness refers to a strong urge to sleep, or the feeling that you simply cannot keep your eyes open any longer. Fatigue, on the other hand, is a state of physical and/or mental exhaustion. A helpful way to think about fatigue is the profound tiredness a healthy person might experience after running a marathon: they feel drained and depleted, but may not necessarily be able to fall asleep simply by lying down and closing their eyes.

Clinically, excessive daytime sleepiness refers to experiencing significant sleepiness during the day despite obtaining what would generally be considered an adequate amount of sleep the night before. Research suggests that excessive daytime sleepiness is more common in people with POTS than in the general population.

Why Does POTS Affect Sleep?

The exact mechanisms are still being investigated, but several factors likely contribute:

• Ongoing autonomic nervous system activation

• Elevated heart rate during sleep

• Increased physiological arousal

• Chronic pain

• Gastrointestinal symptoms

• Temperature regulation difficulties

• Anxiety related to symptoms

• Co-occurring conditions such as hypermobility syndromes, chronic pain conditions, migraine, mast cell disorders, or chronic fatigue syndrome

  
  

Rather than a single cause, sleep difficulties in POTS are usually the result of multiple interacting factors.

What Treatments Are Available?

Optimising POTS Management

Addressing underlying POTS symptoms is often an important first step. Improving hydration, increasing dietary salt (when medically appropriate), using compression garments, participating in graded exercise programs, and optimising medication management may help reduce symptoms that interfere with sleep.

Screening for Other Sleep Disorders

Not all sleep problems in POTS are caused by POTS itself. Conditions such as obstructive sleep apnoea, restless legs syndrome, circadian rhythm disorders, or medication side effects may also contribute. A thorough assessment can help identify whether additional sleep disorders are present.

Cognitive Behavioural Therapy for Insomnia (CBT-I)

CBT-I is considered the first-line psychological treatment for chronic insomnia and has extensive evidence supporting its effectiveness in the general population. It focuses on changing behaviours and thought patterns that inadvertently maintain insomnia.

CBT-I typically includes:

• Sleep scheduling

• Stimulus control strategies

• Reducing unhelpful sleep-related habits

• Managing sleep-related worry

• Relaxation techniques

• Improving consistency of sleep and wake times

Does CBT-I Work for People with POTS?

This is where the evidence becomes more limited.

Although sleep disturbances are well documented in POTS, there are currently very few studies specifically examining CBT-I in POTS populations. At present, there is no strong evidence base showing that standard CBT-I is effective for POTS-related sleep problems specifically.

However, this does not mean CBT-I cannot help.

Many people with POTS develop secondary insomnia over time. After months or years of disrupted sleep, understandable concerns about sleep can emerge:

• "What if I don't sleep tonight?"

• "Tomorrow will be impossible if I'm exhausted."

• "I need to stay in bed longer to catch up."

These patterns can unintentionally perpetuate insomnia, even when the original sleep disruption was caused by POTS symptoms. CBT-I may help address these learned behavioural and cognitive factors.

Adapting CBT-I for Chronic Illness

Standard CBT-I often includes sleep restriction therapy, which deliberately reduces time spent in bed to strengthen sleep drive.

For individuals with POTS, chronic fatigue syndrome, chronic pain, hypermobility disorders, or other chronic health conditions, this approach may require careful modification. Excessive sleep restriction could potentially worsen fatigue, symptom flares, dizziness, or functional capacity.

Many sleep psychologists (including our own team) now advocate for flexible, individualised CBT-I approaches in people with chronic medical conditions. Rather than rigidly applying standard protocols, treatment may focus on:

• Stabilising sleep-wake rhythms

• Reducing sleep-related anxiety

• Gentle forms of bedtime restriction that help to retrain unhelpful sleep associations and improve sleep efficiency gradually

• Balancing sleep goals with symptom management

• Supporting pacing and energy conservation strategies

The Bottom Line

Sleep problems are extremely common in POTS and can significantly contribute to fatigue, cognitive difficulties, pain, and reduced quality of life. While researchers are still working to understand exactly why sleep is disrupted in POTS, evidence suggests that autonomic dysfunction, physiological arousal, and co-occurring health conditions all play important roles.

Although research specifically examining CBT-I in POTS is currently limited, CBT-I remains the gold-standard treatment for chronic insomnia and may be beneficial when insomnia symptoms are present alongside POTS. The most effective approach is often one that addresses both the physiological symptoms of POTS and the behavioural factors that can maintain sleep difficulties over time.

If you live with POTS and feel that sleep is contributing to your fatigue, it may be worth discussing your concerns with your treating team. Improving sleep quality will likely not eliminate your POTS symptoms, but it can make a meaningful difference to your overall functioning, wellbeing, and quality of life.