Diabetes mellitus is a common condition that is becoming even more common with the passage of time. One of the most prevalent consequences of diabetes is adhesive capsulitis, a "frozen shoulder. " This debilitating condition diminishes one's quality of life due to its progressive pain, limited range of motion of the glenohumeral joint, and tiger point physical inactivity. One of the most important non-pharmacological approaches to symptom relief and functional improvement is acupressure. This study aimed to evaluate the effect of acupressure sessions on joint mobility, pain intensity, and disability in patients with diabetes adhesive capsulitis. This study was quasi-experimental and involved concurrent groups. Sixty diabetes adhesive capsulitis patients were enrolled in the study. They were followed in the outpatient rehabilitation clinic of Damanhur General Hospital. There were 30 patients in each of the two groups, appointed randomly and equally, the control and the intervention groups. The data collection instrument is patients' socio-demographic and clinical data, Visual Analogue Pain Scale (VAS), shoulder mobility measurement, and Disabilities of the Arm, Shoulder, and Hand (DASH) score. The current study findings demonstrated that there were substantial differences between the study groups concerning their joint mobility, pain intensity, and disability after the application of acupressure sessions. The study concluded that acupressure may be beneficial as a complementary therapy to conventional methods for patients with diabetes adhesive capsulitis to improve joint mobility, pain intensity, and disability. This study recommended that patients with adhesive capsulitis could benefit from distributing illustrated handouts that teach them how to perform self-administered acupressure interventions. Furthermore, Complementary therapy is appropriately and safely integrated into patient care in nursing education programs. It not only improves the quality and position of nursing but also emphasizes the vital function of nurses in assisting patients in managing symptoms that cannot be fully controlled alone by medicine.