PRIMARY OBJECTIVES:~I. To evaluate whether topical cannabidiol (CBD) improves CIPN, compared to placebo.~II. To evaluate side effects from topical CBD cream use, compared to placebo.~SECONDARY OBJECTIVES:~I. Other measures of neuropathy as measured by the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire (QLQ) CIPN20 motor subscale, the EORTC QLQ CIPN20 autonomic scale, and the total Common Terminology Criteria for Adverse Events (CTCAE) neuropathy scale.~II. Adverse event profiles will also be assessed using symptom questionnaires and CTCAE version (v)5.0.~OUTLINE: Patients are randomized to 1 of 2 arms.~ARM I: Patients apply cannabidiol cream topically to affected areas twice daily (BID) for 14 days. Patients then apply placebo cream topically to affected areas BID for 14 days.~ARM II: Patients apply placebo cream topically to affected areas BID for 14 days. Patients then apply cannabidiol cream topically to affected areas BID for 14 days.
This clinical trial compares topical cannabidiol to placebo in improving chemotherapy-induced peripheral neuropathy, or painful sensations in your hands or feet due to chemotherapy. Peripheral neuropathy is a nerve problem that causes pain, numbness, tingling, swelling, or muscle weakness in different parts of the body. It usually begins in the hands or feet and gets worse over time. Peripheral neuropathy caused by chemotherapy is called chemotherapy-induced peripheral neuropathy (CIPN). CIPN is commonly seen in patients receiving certain chemotherapy medications and is hard to treat. Medications commonly used to treat CIPN have limited benefits and may cause significant side effects. A small report showed that topical cannabidiol may help treat neuropathy in patients with diabetes. This study is being done to determine if cannabidiol cream can help improve the symptoms of CIPN.