Background: Breast cancer-related lymphedema is a prevalent complication of breast cancer 
treatment. It has a significant negative impact on patients ‘physical and psychological well-being 
and overall quality of life. Cryotherapy gained universal acceptance for its therapeutic effects on 
controlling various forms of edema when used in conjunction with conservative treatments for 
patients with lymphedema. Aim of the study was to evaluate the effect of topical cryotherapy on 
the clinical outcomes of patients with breast cancer-related lymphedema. Subjects and 
methods: A quasi-experimental research design was utilized to carry out this study. A purposive 
sample of 84 adult women who had breast cancer-related lymphedema was divided into two 
equal groups. Tools: Four tools were used to collect data, as follows: Tool I: Patients' 
demographic characteristics and health-related data; Tool II: Manual circumference 
measurement, Tool III: Lymphedema tracking tool; and Tool IV: Numerical Rating Scale (NRS).
Results: The present study showed that there were statistically significant differences between 
the control and study groups regarding total mean scores of lymphedema-related symptoms and 
pain scores post-intervention (P < 0.05). Moreover, there was a significant improvement in the 
total mean scores of the patients' arm circumferences in the study group after intervention; wrist 
measurement improved from 18.15 (1.97) to 16.98 (1.27), forearm from 27.26 (2.84) to 25.49 
(2.11), and upper arm from 38.2 (3.36) to 36.17 (2.66). Conclusion: The study results indicated 
that cryotherapy is an effective complementary modality for the treatment of breast cancerrelated lymphedema. Recommendations: It is recommended to include cryotherapy in physical 
therapy protocols for lymphedema rehabilitation, develop educational programs and guidelines 
for safe application in clinical settings, and evaluate long-term effects