Chronic Widespread Pain

Many people with chronic widespread pain (CWP) feel more pain and fatigue after exercise. This makes it hard to stay active. Unfortunately, the investigators do not fully understand why this happens and how to prevent it. The primary goal of this study is to explore the underlying genetic and epigenetic mechanisms of BDNF gene in response to exercise, and investigate if transcranial direct current stimulation (tDCS) during exercise works to improve worsening symptoms response to exercise in people with CWP. The investigators designed a randomized crossover study and will enroll 60 patients with CWP and 60 healthy controls. Participants will undergo 2 interventions in random order: 1) exercise + active tDCS, and 2) exercise + sham tDCS. Participants will visit the hospital twice with at least one week in between the visits.

Fibromyalgia (FM) is a chronic, widespread pain syndrome affecting 2-6.6% of the population and significantly impairing quality of life. In addition to pain, individuals with FM commonly experience fatigue, sleep disturbances, cognitive and psychological problems, leading to functional limitations and social difficulties. Central sensitization is considered a key mechanism, although the exact pathophysiology remains unclear, highlighting the need for multidimensional assessment. FM affects not only physical function but also psychological status, autonomic nervous system regulation, sleep quality, self-esteem, eating behaviors, and gastrointestinal function. Depression, anxiety, autonomic dysfunction, sleep disorders, altered eating behaviors, and gastrointestinal symptoms are highly prevalent and closely associated with pain severity, fatigue, and reduced quality of life. Given its complex biopsychosocial nature, FM requires a holistic evaluation and management approach. Accordingly, this study aims to compare symptoms, psychological status, autonomic function, sleep, eating behaviors, and gastrointestinal parameters between women with fibromyalgia and healthy women.

To determine if decreased production or release of endogenous opioid peptides by peripheral immune cells contributes to hypersensitivity in people with HIV

The goal of this clinical trial is to learn if a psychotherapy intervention works to relieve widespread pain in patients with lupus. The main questions it aims to answer are: Is the psychotherapy treatment safe for lupus patients? Are lupus patients able to complete the treatment? Can the treatment help improve chronic pain and other symptoms in lupus patients? Researchers will compare the treatment to a control (participants who will continue their medical treatment but will not receive psychotherapy for the time frame of the treatment) to see if the psychotherapy treatment works to relieve widespread pain and other lupus-related symptoms. Participants will: Fill out questionnaires before and after the treatment. Participate in 8 weekly treatment sessions, 2 hours per session, delivered via Zoom from their own home. Keep a list of medications and monitor any changes in their medication regimen.

Rheumatoid arthritis is an autoimmune condition, causing inflammation and pain. Yet pain may persist even when inflammation has been treated. This residual pain, called nociplastic pain, has symptoms of a chronic pain condition called fibromyalgia. There are few effective therapies to address this residual pain. Published literature shows that fibromyalgia can be treated by neurofeedback, a noninvasive method that is based on the voluntary modulation of cortical activity. In this pilot study, the investigators want to test the effect of neurofeedback on the fibromyalgia component of pain in rheumatoid arthritis, and also to investigate its effects on related symptoms such as fatigue and sleep disturbance.