What are the five types of sleep disorders?

The five main categories of sleep disorders are: (1) Insomnia — difficulty falling or staying asleep; (2) Sleep apnoea — repeated breathing interruptions during sleep; (3) Narcolepsy — sudden, uncontrollable daytime sleep episodes; (4) Restless Legs Syndrome (RLS) — an irresistible urge to move the legs at rest; and (5) Parasomnias — disruptive sleep behaviours such as sleepwalking or night terrors.

Why can I not sleep even when I am exhausted?

Being tired but unable to sleep is a common presentation of insomnia known as hyperarousal — where the nervous system remains in an alert state even when the body is fatigued. The most common triggers include anxiety or stress, chronic pain, depression, disrupted circadian rhythms from shift work, and conditioned wakefulness where the brain has learned to associate the bedroom with wakefulness.

Can I get a medical consultation for sleep disorders at Naturecan Clinic?

Yes. Sleep disorders including insomnia, sleep apnoea, RLS, and narcolepsy are assessed by Naturecan Clinic's GMC-registered doctors. To be eligible, you will need a sustained history of sleep difficulties and to have tried at least two conventional treatment approaches such as sleep hygiene programmes or CBT-I.

What does the endocannabinoid system have to do with sleep?

The endocannabinoid system (ECS) plays a role in regulating sleep-wake cycles, mood, and stress response. Research into how the ECS interacts with sleep architecture is ongoing. At Naturecan Clinic, our doctors discuss the current evidence individually during your consultation and will not make efficacy claims beyond what the evidence supports.

Sleep - Naturecan Clinic

SleepDisorders

Tired but can't sleep? Waking at 3am and lying there for hours? You're far from alone — over 14 million people in the UK are living with undiagnosed sleep difficulties. Our specialist private doctors is here to help when the usual options haven't been enough.

What are sleep disorders?

A sleep disorder is any persistent condition that disrupts the quality, timing, or duration of your sleep — and has a meaningful impact on how you function during the day. They range from difficulty falling asleep (insomnia) to breathing disruptions (sleep apnoea), to involuntary movements or sudden daytime sleep episodes.

It's important to distinguish occasional poor sleep — which most people experience at some point — from a true sleep disorder. The key markers are persistence (at least three nights per week for three months or more), distress, and daytime impairment even when you have adequate time and opportunity to sleep.

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Insomnia

The most common sleep disorder. Insomnia involves persistent difficulty falling asleep, staying asleep, or waking too early — leaving you unrefreshed regardless of how long you spend in bed. It can be short-term (triggered by stress) or chronic (lasting three months or more). Around 37% of UK adults experience insomnia, yet only a fraction receive a diagnosis or effective insomnia treatment.

Most Common

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Sleep Apnoea

A condition in which breathing repeatedly stops and starts during sleep, often causing loud snoring, gasping, and fragmented rest. An estimated 2.5 million people in the UK live with obstructive sleep apnoea — and 85% are undiagnosed. Untreated, it significantly raises the risk of cardiovascular disease, diabetes, and other serious conditions.

Often Undiagnosed

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Narcolepsy

A neurological condition causing sudden, uncontrollable episodes of deep sleep during the day, often with muscle weakness (cataplexy), sleep paralysis, and vivid hallucinations at sleep onset. Narcolepsy is frequently misdiagnosed as depression or epilepsy, and carries an average delay to diagnosis of over 10 years.

Severely Underdiagnosed

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Restless Legs Syndrome (RLS)

An uncontrollable urge to move the legs at rest, typically worse in the evenings. RLS makes falling asleep extremely difficult and is accompanied by uncomfortable crawling or tingling sensations. Women are twice as likely to be affected as men, and it frequently goes unrecognised in primary care for years.

Chronic Condition

Common symptoms

Sleep disorder symptoms extend well beyond nighttime — they reshape how you feel, think, and function throughout the day.

Difficulty falling asleep even when you're tired

Waking frequently during the night and struggling to fall back asleep

Waking too early and being unable to get back to sleep

Feeling completely unrefreshed even after a full night in bed

Daytime fatigue, low mood, or irritability affecting work and relationships

Difficulty concentrating, memory problems, or persistent brain fog

Loud snoring, gasping, or being told you stop breathing in your sleep

An irresistible urge to move your legs when lying at rest

Sudden overwhelming sleepiness during the day, at inappropriate moments

When should you seek help?

If sleep difficulties have persisted for three months or more, occur at least three nights per week, and are affecting your work, relationships, or wellbeing — speak to a doctor. You don't have to "push through" indefinitely, and you don't need a GP referral to access specialist support.

Sleep disorder & insomnia treatment options

There's no single treatment for all sleep disorders — the right approach depends on the underlying cause, severity, and individual circumstances. Treatment typically follows a stepped pathway, from foundational lifestyle changes through to specialist clinical intervention.

Clinical evidence for all treatment options, including newer approaches, varies in quality and is not universally conclusive. A specialist will weigh the evidence honestly with you.

Why so many people don't get help

The NHS acknowledges sleep disorders as serious conditions, and NICE has clear guidance on first-line treatments. The reality is a significant gap between what patients should receive and what's actually available — creating the very conditions that drive demand for alternative treatments.

CBT-I — the most effective first-line insomnia treatment — is inaccessible across the majority of NHS Trusts. GPs typically have limited training in sleep medicine and too little appointment time to properly investigate complex presentations. Many patients are offered short-term medication and sent away.

The result: millions of people managing severe, chronic sleep disorders without adequate support — often for years or decades. If that's your experience, it reflects a system capacity problem, not a reflection of how real or serious your condition is.

The endocannabinoid system & sleep

The body's endocannabinoid system (ECS) plays a significant role in regulating sleep, mood, pain, and stress — the very systems that, when dysregulated, often underlie sleep disorders. ECS receptors (CB1 and CB2) are distributed throughout the brain regions governing sleep-wake cycles, including the hypothalamus and brainstem.

Emerging research suggests that disturbances in ECS function may contribute to chronic insomnia — particularly where anxiety, chronic pain, or PTSD are co-occurring. This has generated growing clinical interest in cannabis-based medicinal products (CBMPs) as a potential treatment consideration in sleep medicine.

Cannabis-based medicines have been legally prescribable in the UK since November 2018, when the government rescheduled them from Schedule 1 to Schedule 2 of the Misuse of Drugs Regulations 2001. They are Prescription Only Medicines (POMs) available exclusively through specialist clinicians following thorough individual assessment.

Important:

Cannabis-based medicines are not a first-line or universal treatment for sleep disorders. They may be considered by specialist clinicians only where appropriate first-line treatments have been tried and found insufficient. All prescribing decisions are made on an individual, clinical basis. This content is for education only and does not constitute medical advice.

If poor sleep has been affecting your
quality of life

If poor sleep has been affecting your quality of life and previous treatments or interventions have not provided adequate relief, you may wish to discuss this with a specialist clinician. Our doctors are here to listen properly, assess thoroughly, and work with you on a plan that fits your situation.

No GP referral needed · Remote video appointments · Specialist doctors · CQC regulated

SleepDisorders

What are sleep disorders?