Management of Generalized Body Pain and Headache in Cancer Patients

Diagnostic Approach

The National Comprehensive Cancer Network recommends excluding metastatic disease or cancer recurrence as the cause of generalized pain in patients with a history of cancer, as pain related to oncologic emergencies requires direct treatment of the underlying condition while managing symptoms 1, 2
A comprehensive pain assessment should be obtained using a 0-10 numeric rating scale to quantify pain intensity, asking specifically: "What has been your worst pain in the last 24 hours?" 1, 2
The pain should be characterized by determining if it is somatic, visceral, or neuropathic 2, 3
A thorough physical examination should be performed, specifically evaluating for bone tenderness, neurological deficits, and signs of impending pathological fracture 1, 2

Imaging studies, including bone scan and CT or MRI, should be ordered immediately to evaluate for metastatic disease 1, 2
The patient's PSA level should be checked to assess for biochemical recurrence of prostate cancer 2

For moderate pain (4-6/10 on numeric scale), scheduled analgesics should be initiated, and NSAIDs should be considered if there are no contraindications 4, 5, 6
For neuropathic pain, gabapentin or pregabalin should be started, with dose adjustments required for renal insufficiency 4, 6
For severe pain (7-10/10), opioid therapy may be necessary, and the patient's opioid tolerance status should be assessed 1, 4

Emotional support should be provided, acknowledging that pain will be addressed as part of comprehensive care 4, 6
The patient and family should be educated that relief of pain is medically important and that there is no benefit to suffering 4, 6
Coping skills, such as relaxation techniques and guided imagery, should be taught 4, 6

Pain intensity should be reassessed at each visit using the same numeric rating scale 2, 3
The patient should be monitored for analgesic side effects, and the regimen should be adjusted accordingly 2, 5
The patient's functional status and impact on daily activities, sleep, mood, and quality of life should be evaluated 1, 2, 3