Cancer-Related Fatigue: A Review and a Conceptual Framework to Guide Therapists' Understanding

Abstract

Cancer-related fatigue is reported as the most common and distressing symptom experienced by people with cancer. There is limited research published to guide occupational therapists working with people with cancer to help address this distressing symptom. This article reviews literature on cancer-related fatigue and identifies several factors associated with the development of fatigue, including underlying medical factors and other factors.

The underlying medical factors reported in the literature include biomedical mechanisms, such as anaemia, proinflammatory cytokines and specific cellular processes; disease-related factors; treatment-related factors; and comorbid conditions. Other factors reviewed include physical or behavioural factors, such as poor nutrition, decreased activity, sleep disturbance and pain; psychological factors, including anxiety and depression; and sociodemographic factors, such as social support, employment and education.

The review identified a variety of factors associated with cancer-related fatigue, which must be considered by occupational therapists working with people with cancer. This presents a challenge to the clinical reasoning of occupational therapists attempting to treat such people. A framework of factors contributing to cancer-related fatigue is proposed in order to guide both the practice of occupational therapists working with adults with cancer and future research in this area.