Comprehensive Workup for Fatigue in Elderly Patients

Initial Assessment

A thorough evaluation of fatigue in elderly patients should include assessment of treatable contributing factors such as pain, emotional distress, sleep disturbance, medication side effects, nutritional status, activity level, and comorbidities 1
Screen fatigue severity using a numeric rating scale (0-10) or categorization as none, mild, moderate, or severe 1
Patients with scores of 0-3 (mild) require only rescreening at regular intervals, while patients with scores of 4-10 (moderate to severe) warrant a focused evaluation 1
Document onset, pattern, duration, and changes in fatigue over time 1

Complete blood count with differential to evaluate for anemia, infection, or malignancy 2
Comprehensive metabolic panel to assess liver and kidney function 2
Thyroid-stimulating hormone (TSH) to rule out thyroid dysfunction 2
Erythrocyte sedimentation rate (ESR) and C-reactive protein (CRP) to evaluate for inflammation 2
Consider HIV testing and tuberculosis screening if risk factors are present 2

Review all current medications (including over-the-counter, herbal supplements, vitamins) 3
Note any recent medication changes that might contribute to fatigue 3
Evaluate for medication interactions that may cause excessive drowsiness 3
Consider cardiac medications (such as β-blockers) that may cause bradycardia and fatigue 3

Assess sleep quality, quantity, and hygiene 3
Screen for sleep disorders such as sleep apnea or insomnia 3
Evaluate sleep environment and pre-bedtime activities 4
Evaluate weight changes, caloric intake, and appetite 4
Check for fluid and electrolyte imbalances 4
Consider consultation with nutrition expert if substantial abnormalities exist 4
Assess changes in exercise or activity patterns 3
Evaluate ability to accomplish normal daily activities 3
Determine current conditioning level before recommending exercise 3
Screen for depression and anxiety, which frequently co-occur with fatigue 1
Assess emotional distress and coping strategies 1
Consider cognitive behavioral therapy for chronic fatigue 5

Chest X-ray as initial screening for pulmonary pathology if respiratory symptoms present 2
Consider CT scan if lymphadenopathy, organomegaly, or masses are suspected 2
Further imaging based on specific clinical findings 2

Treat any identified underlying causes of fatigue 3
Implement structured physical activity plan with gradual increase in intensity 5
Implement good sleep hygiene practices 4
Address nutritional deficiencies 4
Consider psychosocial interventions for emotional distress 5

Reassess fatigue severity at each visit 1
Be aware that fatigue rarely occurs in isolation and often clusters with other symptoms 1
Don't overlook medication side effects as potential contributors to fatigue 1