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 helpFatigue 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.
Fatigue as a presenting complaint may involve:
Fatigue that is progressive, associated with weight loss or other symptoms, or significantly impairing should always be assessed by a GP.
Management depends on the cause:
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.
Showing 8 therapies linked to Fatigue.
| Therapy | Evidence | Notes |
|---|---|---|
| Cognitive Behavioural Therapist |
strong
|
CBT helps identify the unhelpful activity and rest patterns that perpetuate fatigue, building a steadier balance of energy across the day. |
| Counsellor |
moderate
|
Counselling offers space to explore the stress, low mood or life pressures that can drain energy and leave persistent fatigue feeling worse. |
| Mindfulness Practitioner |
moderate
|
Mindfulness can ease the tension and constant mental effort that compound tiredness, helping you notice and respect your body's energy limits. |
| Physiotherapist |
moderate
|
Physiotherapy supports graded, paced movement so deconditioning is reversed gently without triggering the crashes that often follow overexertion. |
| Pilates Practitioner |
moderate
|
Pilates rebuilds core strength and stamina through controlled low-impact exercise, helping counter the deconditioning that worsens daily fatigue. |
| Psychotherapist |
moderate
|
Psychotherapy can address deeper emotional strain or unresolved issues that sap motivation and sustain a draining sense of exhaustion. |
| Yoga Therapist |
moderate
|
Yoga therapy combines gentle movement and breathing to ease tension and support pacing, which may help with energy levels alongside other care. |
| Meditation Practitioner |
moderate
|
Meditation may offer supportive relief from the stress and restlessness that accompany fatigue; evidence is limited and it shouldn't replace appropriate care. |
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.
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.
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.
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.
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.