“…There is an ongoing discussion about the cause of PSF and the factors that perpetuate it. Literature shows that the presence of biological factors such as leucoaraiosis ( 47 ), depression and anxiety ( 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ), pain ( 47 , 48 , 57 ), sleep disturbances ( 49 , 52 , 53 ), external locus of control ( 54 ), neuroticism ( 50 ) and inadequate coping style ( 59 ) are related to PSF. Higher functional disability levels and stroke severity ( 46 , 49 , 52 , 55 , 58 ), lower physical activity before and after stroke ( 55 , 56 ), use of sedative medication ( 55 ) and prestroke fatigue ( 48 , 52 , 55 ) also seem to play an important role.…”