Evaluation and Management of Fatigue

Initial Assessment and Medication Review

The National Comprehensive Cancer Network recommends a comprehensive metabolic panel to assess electrolyte imbalances, which can contribute to fatigue 1
Beta-blockers, such as metoprolol, are a common cause of fatigue, and the National Comprehensive Cancer Network suggests reviewing the necessity and dosing of these medications 1
The American College of Physicians recommends assessing for medication interactions that may compound fatigue, such as those between metformin, lisinopril, metoprolol, and atorvastatin 1

The National Comprehensive Cancer Network suggests screening for sleep disorders, as sleep disturbance is a common cause of persistent fatigue 2, 1
The National Comprehensive Cancer Network recommends evaluating sleep hygiene, including consistent sleep/wake times, bedroom environment, and evening alcohol use, as daily wine consumption can disrupt sleep architecture and contribute to fatigue 1, 3
The National Comprehensive Cancer Network recommends assessing for depression using validated tools, such as the PHQ-9, as depression accounts for a significant proportion of fatigue cases 2

The National Comprehensive Cancer Network recommends optimizing or changing beta-blocker therapy if contributing to fatigue, and reducing or eliminating evening alcohol consumption to improve sleep quality 1
The National Comprehensive Cancer Network suggests treating depression with appropriate antidepressants, and optimizing sleep hygiene with specific behavioral interventions 4, 5, 1, 3
The National Comprehensive Cancer Network recommends implementing nonpharmacologic interventions, such as exercise and energy conservation strategies, concurrent with addressing identified treatable factors 3, 6
The American College of Sports Medicine recommends starting with low-level activities, such as 10-15 minute walks, and gradually increasing exercise intensity and duration 3, 7

The National Comprehensive Cancer Network recommends scheduling follow-up in 2-4 weeks after implementing initial interventions, and using a standardized fatigue scale to track progress 8, 5, 2, 9
The National Comprehensive Cancer Network suggests reassessing regularly and modifying treatment based on response, and considering referral to specialists if fatigue remains unresolved after 3 months despite appropriate interventions 8, 5

Screen for and correct deficiencies in sodium, potassium, calcium, and magnesium in patients with postural orthostatic tachycardia syndrome (POTS) to reduce fatigue severity – correction of these electrolyte abnormalities has been shown to alleviate fatigue in this population. 10

Continue regular follow‑up after initial symptom improvement because fatigue may persist or recur, necessitating ongoing assessment and possible adjustment of therapy – persistent or recurrent fatigue has been reported even when early treatment responses are favorable. 11