Breast cancer is the most commonly diagnosed cancer in women, with a high rate of survival. 1 Therefore, a big amount of breast cancer survivors (BCS) must face sequelae of this disease and symptoms which may affect negatively their lives. 2,3 Between them, chronic pain can affect up to 30% of BCS 10 years after treatment, 4 reducing quality of life. 5 Therefore, its management is an important factor in the quality of life and in the rehabilitation treatment in BCS. 2,6 Chronic pain in this population has been widely studied, 7 including contributing psychological factors, such as catastrophizing. 8 The term catastrophizing refers to an attentional focus on negative aspects of the patient's situation. 9 In the study of chronic pain, pain catastrophizing (PC) is defined as an exaggerated negative mental set brought to bear during actual or anticipated painful experiences. 10 Currently, PC is integrated as part of the Fear-Avoidance Model of Chronic Pain, which states that negative appraisals about pain and its consequences,