“…Frequent additional nonmotor symptoms include depression, anxiety, apathy, (hypo‐)mania, dementia, psychosis, and impulse control disorder (Callesen, Weintraub, Damholdt, & Moller, 2014; van der Hoek et al., 2011; Maier et al., 2014; Reijnders, Ehrt, Weber, Aarsland, & Leentjens, 2008; Richard, 2007; Riedel et al., 2008; Sagna, Gallo, & Pontone, 2014; Starkstein, Brockman, & Hayhow, 2012). Together with motor symptoms (Appleman, Stavitsky, & Cronin‐Golomb, 2011; Hechtner et al., 2014; Weintraub et al., 2010), nonmotor symptoms can severely affect patients′ health‐related quality of life (Montel, Bonnet, & Bungener, 2009; Shearer, Green, Counsell, & Zajicek, 2012; for reviews see Den Oudsten, Van Heck, & De Vries, 2007; van Uem et al., 2016). Health‐related quality of life encompasses those aspects of well‐being and satisfaction with life that affect the individual's physical and mental health, including functional status, and social support as well as the subjective health perception (Centers for Disease Control and Prevention, 2000).…”