“…Previous correlative studies have demonstrated relationships between various clinical parameters and diminished QOL in MS (Lobentanz et al, 2004;Newland, 2006). Most studies in subjects with MS have shown that depression and fatigue are two of the most common symptoms and are clearly associated with reduced QOL scores (Drulovic et al, 2007;Janardhan & Bakshi, 2002;Newland, 2006;Pollmann, Busch, & Voltz, 2005;Pittion-Vouyovitch et al, 2006). Fatigue is often considered a state of exhaustion distinct from depressed mood or physical weakness (Krupp, 2003).…”