“…Also, usual work is completely hampered by chronic pain in 71.7 % of cases. Indeed, several authors have reported that chronic pain disrupts body patterns, reduces overall activity level, and causes intolerance to physical and/or intellectual effort [2,26], chronic pain is, therefore, a source of disability, and major alterations in daily life [2]. Furthermore, due to chronic pain complete sleep discomfort was noted in 38.01 % of cases, several studies prove that chronic pain is significantly associated with sleep disorders and even insomnia in hemodialysis patients [11,18,27,28].…”