Stanford University
The investigators are testing treatment with low-dose naltrexone (LDN) for symptom relief of complex regional pain syndrome (CRPS). Study participants will be randomly assigned to receive either LDN or placebo for a period of several weeks. During this period participants will be asked to attend either in-person or virtual study visits and complete questionnaires.
Inclusion Criteria: * Upper and/or lower extremity CRPS * On stable treatment for 1 month * CRPS for at least 1 year * Meet the Budapest criteria for CRPS at time of the study. Exclusion Criteria: * Any known allergy to naltrexone or naloxone * Use of prescription opioid analgesics or illegal opioid use * Current or planned pregnancy.
Sugar pill