“…There is evidence that DBS may also worsen depression and mania, increase apathy, affect emotional lability, and increase the risk of suicide (Berney et al, 2002;Doshi et al, 2002;Okun et al, 2003Okun et al, , 2009Funkiewiez et al, 2004;Smeding et al, 2005Smeding et al, , 2006Drapier et al, 2008;Voon et al, 2008). Mood problems are more common in patients treated with STN-DBS than those treated with GPi-DBS Follett et al, 2010;Moro et al, 2010;Bronstein et al, 2011).…”