Fatigue
Fatigue
Fatigue is more than simply feeling tired. It is a persistent sense of exhaustion or lack of energy that does not fully improve with rest.
Fatigue can affect your physical, mental, and emotional wellbeing and may interfere with work, daily activities, and quality of life.
While short-term tiredness is often related to stress, poor sleep, or a busy lifestyle, ongoing or severe fatigue can be a sign of an underlying
medical condition. Private GPs can help assess the cause of your fatigue, arrange investigations such as blood tests, and provide an appropriate
treatment plan or referral to a specialist when needed.
Symptoms of Fatigue in Adults
Symptoms of fatigue can vary from person to person but commonly include:
- Constant tiredness or exhaustion, even after resting
- Difficulty concentrating or “brain fog”
- Reduced motivation or loss of interest in usual activities
- Feeling sleepy during the day or needing frequent naps
- Headaches, muscle aches, or a general sense of heaviness
- Irritability, low mood, or feeling emotionally drained
Select an appointment type and location using the calendar below to get started.
Select an appointment type and location using the calendar below to get started
Causes of Fatigue
Fatigue can have many causes, including lifestyle factors, physical health conditions, and emotional or psychological issues.
In many cases, more than one factor is involved.
Lifestyle-Related Causes
- Insufficient or poor-quality sleep
- High stress levels at work or home
- Irregular eating patterns or poor nutrition
- Dehydration
- Excessive caffeine or alcohol intake
- Low levels of physical activity or, conversely, overtraining
Medical Causes
Fatigue is a common feature of many medical conditions. These may include:
- Anaemia (low red blood cell count or iron deficiency)
- Thyroid disorders (underactive or overactive thyroid)
- Vitamin and mineral deficiencies (e.g., vitamin B12, folate, vitamin D)
- Diabetes or blood sugar imbalance
- Heart, lung, liver, or kidney disease
- Chronic infections or inflammatory conditions
- Sleep disorders such as sleep apnoea
- Chronic fatigue syndrome (CFS/ME)
Emotional and Psychological Causes
- Depression or low mood
- Anxiety or persistent worry
- Work-related stress or burnout
- Significant life changes or ongoing emotional strain
Patterns of Fatigue
The way fatigue presents can provide clues about the underlying cause:
Short-Term (Acute) Fatigue
- Often related to a recent illness, late nights, travel, or stress
- Usually improves with rest, recovery, and better sleep
- May be accompanied by mild headache, muscle aches, or reduced focus
Persistent or Long-Lasting Fatigue
- Lasts for several weeks or months
- Does not fully improve with sleep or rest
- May be linked to chronic conditions such as anaemia, thyroid disorders, diabetes, or sleep apnoea
- Can be associated with low mood, anxiety, or other mental health concerns
Severe Fatigue
- May make it difficult to get out of bed or manage daily tasks
- Can be associated with breathlessness, chest discomfort, dizziness, or unintentional weight changes
- Requires prompt medical assessment to exclude serious illness
Treatment for Fatigue
Treatment for fatigue depends on the underlying cause. After assessing your symptoms and arranging appropriate tests, your doctor may recommend:
Lifestyle and Sleep Management
- Establishing a regular sleep schedule and improving sleep hygiene
- Gradually increasing physical activity as tolerated
- Optimising diet, hydration, and limiting alcohol or caffeine
- Stress reduction strategies such as relaxation techniques or mindfulness
Medical and Specialist Treatments
- Iron, vitamin B12, folate, or vitamin D supplements when needed
- Medication to treat thyroid disorders or other hormonal imbalances
- Management of diabetes, heart disease, or other chronic conditions
- Referral to a sleep clinic, cardiologist, or other specialist if required
Emotional and Psychological Support
- Counselling or talking therapies
- Cognitive behavioural therapy (CBT) for anxiety, stress, or low mood
- Support in managing work–life balance and lifestyle changes
Important:
If your fatigue is severe, persistent, getting worse, or associated with symptoms such as chest pain, severe shortness of breath,
confusion, or sudden weight loss, you should seek medical advice promptly. Early assessment helps identify treatable causes and
reduces the risk of complications.
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- Our GP will guide you based on your symptoms, family history, and overall health concerns.
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