© 2021 American Occupational Therapy Association, Inc. All rights reserved.Objectives: Rhabdomyolysis is a clinical and biochemical condition that occurs when substances that have a toxic potential inside of cells enter systemic circulation as a result of the destruction of striated muscle fibers. In this study, the epidemiological data of patients who were symptomatic and followed-up with a diagnosis of non-traumatic rhabdomyolysis were evaluated in terms of morbidity, mortality, and length of hospitalization. Materials and Methods: The serum creatinine kinase(CK), myoglobin, and creatinine(CR) levels of 95 patients who were over 18 years of age and had been hospitalized and followed up in the Internal Diseases ward after being diagnosed with non-traumatic rhabdomyolysis at the hospital were evaluated retrospectively. Results: In this study, no statistically significant difference was found between disease etiology and the duration of hospitalization. There was a positive correlation between the CR values and the duration of hospitalization. A statistically significant difference was found between the length of hospitalization and the CR values on admission and at 24h following admission(p=0.043). No statistically significant difference was found between the CK values on admission and the CR values at follow-up and hospital discharge (p=0.594). It was found that patients admitted with a diagnosis of non-traumatic rhabdomyolysis did not negatively affect kidney function with appropriate follow-up and treatment, regardless of the initial CK value. Conclusion: Although non-traumatic rhabdomyolysis is common, possible complications can be minimized with early diagnosis, appropriate treatment, and follow-up. Although serum CK and creatinine values have an important prognostic value in the follow-up of patients, many parameters need to be evaluated together, and more studies are needed to standardize the evaluation of disease prognosis.