history of brain surgery, brain tumor, seizure, stroke, or intracranial metal implantation

systemic rheumatic disorders, including rheumatoid arthritis,systemic lupus erythematosus, and fibromyalgia

alcohol/substance abuse

diminished cognitive function that would interfere with understanding study procedures (i.e., Mini-Mental Status Exam score ≤ 23)

pregnancy or lactation

prosthetic knee replacement or non-arthroscopic surgery to the affected knee

hospitalization within the preceding year for psychiatric illness

no access to a device that can be used for secure videoconferencing for real-time remote supervision.

Home-based tDCS and Mindfulness-based Meditation for Self-management of Clinical Pain and Symptoms