Treatment of Fatigue
Begin with nonpharmacologic interventions as first-line therapy, prioritizing moderate exercise programs, cognitive behavioral therapy (CBT), and mindfulness-based interventions, which have the strongest evidence for improving fatigue across all patient populations. 1, 2
Initial Assessment and Screening
- Screen all patients with fatigue using a 0-10 numeric rating scale, with scores ≥4 requiring comprehensive evaluation to identify underlying treatable causes 1, 3
- Conduct a focused evaluation including onset, pattern, duration, and factors that worsen or improve symptoms 1, 3
- Systematically assess for treatable contributing factors: pain, depression, anxiety, sleep disturbances, anemia, nutritional deficits, medication side effects, and endocrine dysfunction 1
- Obtain basic laboratory testing: complete blood count, comprehensive metabolic panel, and thyroid function tests 3
First-Line Nonpharmacologic Interventions (Category 1 Evidence)
Physical Activity
- Implement a structured, gradual exercise program as the primary intervention, targeting 150 minutes of moderate aerobic exercise weekly plus 2-3 strength training sessions 2
- Physical activity has the strongest evidence base (category 1) for treating fatigue during and after treatment 1, 2
- Start slowly and progressively increase intensity to improve functional capacity and activity tolerance 1
Psychosocial Interventions
- Prioritize CBT and mindfulness-based programs, particularly for post-treatment or persistent fatigue, as these demonstrate significant benefit in rigorous trials 1, 2
- CBT has category 1 evidence for reducing fatigue and can be delivered in-person or via web-based platforms for improved accessibility 1, 2
- Mindfulness-based approaches effectively reduce fatigue levels during and after treatment 1, 2
Energy Conservation Strategies
- Teach patients to maintain a daily/weekly diary to identify peak energy periods and plan essential activities accordingly 1, 2
- Counsel patients to prioritize activities, delegate nonessential tasks, and pace themselves throughout the day 1
- Limit daytime naps to less than one hour to avoid disrupting nighttime sleep 1
Sleep Hygiene
- Implement CBT for sleep (category 1 recommendation) for patients with sleep disturbances contributing to fatigue 2
- Establish consistent sleep-wake times, create a restful environment, and avoid caffeine, alcohol, and electronic devices before bedtime 2
Integrative Therapies
- Consider American ginseng for patients undergoing active treatment based on rigorous trial evidence 1
- Consider acupressure for patients with persistent post-treatment fatigue 1
- Tai chi and qigong show benefit during treatment; yoga demonstrates effectiveness after treatment completion 1
Pharmacologic Interventions
What NOT to Use
- Do not routinely recommend wakefulness agents (modafinil), psychostimulants (methylphenidate), or antidepressants specifically for fatigue treatment, as these have not proven effective for this indication 1
- These agents have likely failed because they do not directly target the underlying biologic mechanisms of fatigue 1
Limited Pharmacologic Options
- Consider corticosteroids (methylprednisolone) for short-term use in advanced cancer patients only 1
- Treat identified comorbidities with appropriate medications: levothyroxine for hypothyroidism, antidepressants for depression (fluoxetine, paroxetine, or sertraline), erythropoietin for anemia 1, 4
Treatment of Underlying Causes
- Address all identified treatable factors according to established practice guidelines before initiating symptom-specific fatigue interventions 1
- Optimize management of comorbid conditions including pain, depression, anxiety, sleep disorders, and nutritional deficits 1
- Review and adjust medications that may contribute to fatigue 1, 3
Follow-Up and Monitoring
- Schedule regular follow-up visits rather than sporadic urgent appointments for effective long-term management 4
- Reassess fatigue levels at each visit using the same screening tool to evaluate treatment effectiveness 3
- Adjust management strategies based on response and changes in clinical status 3
- Refer to specialists if fatigue persists despite comprehensive interventions 3
Critical Pitfalls to Avoid
- Do not pursue extensive laboratory testing beyond initial screening if results are normal; repeat testing affects management in only 5% of patients 4
- Avoid focusing exclusively on somatic causes, which can lead to overdiagnosis, as previously undiagnosed cancer accounts for only 0.6% of fatigue cases 5
- Do not prescribe exercise for patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), as it can trigger postexertional malaise and worsen symptoms 6
- Never dismiss patient education and counseling; inform patients that fatigue does not necessarily indicate disease progression 1