Topical Menthol Application in Chemotherapy-Related Peripheral Neuropathy in Patients With Breast Cancer

During the study, the patients' routine pharmacological treatments will continue and menthol will be applied only to reduce the effect of neuropathy. In the study, menthol 1% will be used topically, as it was used in studies after the literature review. Although it was stated in the studies that menthol had no side effects, it was decided to mix menthol with water-based cream according to the literature recommendation. Researchers will first determine how many grams of menthol will be sufficient by applying menthol to their hands and feet.After the gram of the prepared mixture is determined, it will be given to the patients. Patients in the intervention group will be taught how to regularly apply menthol cream (topical menthol) to their hands and feet, twice a day, every day. The effect on CIPN will be evaluated in patients with CIPN for 3 weeks immediately before and after 6 weeks of treatment with menthol administration.