Fatigue

==Needs for research==

===Differentiating characteristics of fatigue due to different causes===
Whilst fatigue may vary considerably by person, it may be possible to identify distinguishing characteristics linking it to different causes.<ref>{{Cite journal|title=Dissecting the fatigue experience: A scoping review of fatigue definitions, dimensions, and measures in non-oncologic medical conditions - PMC|date=2021 |pmc=8474156 |journal=Brain, Behavior, & Immunity - Health |volume=15 |doi=10.1016/j.bbih.2021.100266 |pmid=34589772 | vauthors = Billones R, Liwang JK, Butler K, Graves L, Saligan LN }}</ref><ref name="auto">{{cite journal |last1=Jaime-Lara |first1=Rosario B. |last2=Koons |first2=Brittany C. |last3=Matura |first3=Lea Ann |last4=Hodgson |first4=Nancy A. |last5=Riegel |first5=Barbara |title=A Qualitative Metasynthesis of the Experience of Fatigue Across Five Chronic Conditions |journal=Journal of Pain and Symptom Management |date=June 2020 |volume=59 |issue=6 |pages=1320–1343 |doi=10.1016/j.jpainsymman.2019.12.358 |pmid=31866485 |pmc=7239763 }}</ref><ref>see section on Characteristics by cause above.</ref>

===Impact of phsychological factors===

The possible influence of personal psychological factors on fatigue formation is another possible area of research.<ref>{{cite journal |last1=Schreiber |first1=Herbert |last2=Lang |first2=Michael |last3=Kiltz |first3=Kristina |last4=Lang |first4=Charlotte |title=Is Personality Profile a Relevant Determinant of Fatigue in Multiple Sclerosis? |journal=Frontiers in Neurology |date=4 February 2015 |volume=6 |page=2 |doi=10.3389/fneur.2015.00002 |doi-access=free |pmid=25699007 |pmc=4316719 }}</ref>