Introduction: Multiple sclerosis is a chronic inflammatory demyelinating disease of the central nervous system that predominantly affects young adults (1). Although its etiology has not yet been elucidated, evidence points to an autoimmune pathogenesis where it is thought that self-reactive and
Introduction: Rheumatoid Arthritis (RA) is a common rheumatic disease characterized by pain, inflammation and reduction in joint function. Hands and feet are the most commonly affected joints and pain is the cause that brings patients with RA to search for medical assistance. Factors causing pain