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Sleep Symptom

Fatigue

Persistent fatigue — tiredness, exhaustion or lack of energy that is not fully relieved by rest — is one of the most common complaints in UK primary care, affecting an estimated 20% of adults at any time. It has a wide range of causes from anaemia and thyroid disorders to depression, poor sleep and post-viral illness. Identifying the underlying cause directs the most effective treatment.

See therapies that may help

What is Fatigue?

Fatigue is a subjective sense of tiredness, lack of energy or exhaustion that may be physical, mental or both. Persistent fatigue significantly impairing daily functioning warrants investigation. It is distinct from normal tiredness after exertion, which resolves with rest.

Common causes include physical conditions (anaemia, thyroid dysfunction, diabetes, sleep apnoea); mental health conditions (depression, anxiety, burnout); medications; nutritional deficiencies; post-viral or post-infectious states including long COVID; and deconditioning. In many cases, fatigue is multifactorial — several contributing causes operate simultaneously.

Signs and symptoms

Fatigue as a presenting complaint may involve:

  • Persistent lack of energy that does not improve with rest
  • Physical and/or mental exhaustion impairing daily functioning
  • Reduced capacity compared to previous levels
  • Post-exertional symptom worsening (particularly important in ME/CFS and long COVID)
  • Brain fog and cognitive difficulties accompanying physical fatigue
  • Sleep that does not feel restorative

Fatigue that is progressive, associated with weight loss or other symptoms, or significantly impairing should always be assessed by a GP.

How therapy can help

Management depends on the cause:

  • Medical assessment and treatment — essential first step to identify and treat physical causes
  • Graded activity and pacing — for fatigue with a deconditioning component; for ME/CFS and long COVID, pacing (staying within the energy envelope) is critical and differs from graded exercise therapy
  • CBT for fatigue — addressing the unhelpful beliefs and behaviours (boom-bust cycles, avoidance, deconditioning) that maintain fatigue in some presentations
  • Depression and anxiety treatment — fatigue frequently improves with successful mental health treatment
  • Sleep optimisation — CBT-I for fatigue accompanied by poor sleep quality
  • Nutritional assessment — dietitian assessment for nutritional contributors

Seeking help

A GP assessment is essential for persistent, unexplained fatigue. Once physical causes are investigated, a physiotherapist, CBT therapist or occupational therapist with fatigue experience can provide targeted support. For ME/CFS and long COVID presentations, specialist services take a specific, pacing-focused approach.

Therapies that may help with Fatigue

Showing 29 therapies linked to Fatigue.

Therapy Evidence Notes
Cognitive Behavioural Therapist
strong

CBT for fatigue.

Counsellor
moderate

Counselling for fatigue with psychological component.

Massage Therapist
limited

May help fatigue via relaxation.

Meditation Practitioner
moderate

Meditation for fatigue.

Mindfulness Practitioner
moderate

Mindfulness for fatigue.

Naturopath
limited

If persistent, requires medical assessment; lifestyle changes may support.

Nutritional Therapist
limited

Ensure medical checks; nutrition may support energy routines.

Physiotherapist
moderate

Exercise prescription for fatigue management.

Pilates Practitioner
moderate

Pilates for fatigue via energy management.

Psychotherapist
moderate

Psychotherapy for fatigue with psychological component.

Yoga Therapist
moderate

Yoga for fatigue management.

Aromatherapist
limited

May provide comfort for fatigue.

Ayurveda Practitioner
limited

Persistent fatigue needs medical assessment.

Bioresonance Therapist
limited

Bioresonance used for fatigue.

BodyTalk Practitioner
limited

General wellbeing support; assess persistent fatigue medically.

Colour Therapist
limited

Used supportively for fatigue.

Crystal Therapist
limited

Used supportively for fatigue.

Energy Medicine Practitioner
limited

Used for fatigue.

Healer
limited

Healing used for fatigue.

Herbal Medicine Practitioner
limited

Investigate underlying causes

Homeopath
limited

Used supportively for fatigue.

Homotoxicologist
limited

Persistent fatigue needs medical assessment

Hydroterm Masseuse
limited

Hydrotherm massage for fatigue.

Hypnotherapist
limited

May support fatigue management via stress reduction.

Indian Head Masseuse
limited

Used for fatigue relief.

Kinesiologist
limited

If persistent, needs medical assessment; kinesiology may offer supportive coaching.

Reflexologist
limited

If persistent, needs medical assessment; reflexology may support relaxation.

Reiki Practitioner
limited

Used supportively for fatigue.

Shiatsu Practitioner
limited

Used for fatigue.

Frequently asked questions

How do I know if my fatigue is physical or mental?

Physical and mental fatigue often co-occur and are difficult to distinguish cleanly. A GP assessment including both physical investigation and mental health screening is the appropriate approach. Depression and anxiety produce genuine physical fatigue; physical illness produces cognitive slowing and mood effects.

Is fatigue a symptom of depression?

Yes — fatigue is one of the most common physical symptoms of depression. Reduced energy, physical slowing and profound tiredness are features of depressive episodes. Treating the depression typically improves fatigue, though sometimes residual fatigue requires specific attention.

Can exercise help fatigue?

For most fatigue presentations, graded physical activity is beneficial. For ME/CFS and long COVID, this is nuanced — post-exertional malaise means pushing through fatigue can worsen the condition significantly. Pacing within the energy envelope is the recommended approach for these conditions, not graded exercise therapy.

What is the difference between fatigue and ME/CFS?

ME/CFS is a specific complex condition characterised by profound fatigue with post-exertional malaise (symptom worsening after activity), cognitive difficulties, unrefreshing sleep and pain, lasting at least six months. It is distinct from general fatigue and requires a specific management approach, particularly regarding activity.

How does diet affect energy levels?

Nutritional deficiencies — particularly iron, vitamin B12, vitamin D and magnesium — are common, treatable causes of fatigue. Irregular eating and blood sugar instability also contribute to energy fluctuations. A blood test through your GP can identify common nutritional causes, and a dietitian can provide tailored guidance.