In this regard, a recent study even if it revealed no CT predictors for fatigue at 1 month after stroke, using the OCSP classification as an alternative indicator of lesion location, indicated that patients with POCS had higher fatigue scores that those with other subtypes. Similar findings have been reported by two studies observing a relationship between fatigue and lesions in the posterior circulation territory, defined as either brainstem or thalamic stroke basilar artery infarction. observed that fatigue after stroke has been more common in patients with infratentorial lesions detected on either CT or MRI. found that fatigue after stroke has been associated with acute infarcts in the basal ganglia and internal capsule detected on MRI, whereas Snaphaan et al. These subtypes of fatigue are not mutually exclusive if exertion fatigue is more prevalent in patients with stroke, mental or psychological fatigue is more prevalent in patients with other neurological diseases including multiple sclerosis. Mental fatigue appears with cognitively demanding tasks, while psychological fatigue is associated with lack of interest or poor motivation. Other described subtypes of fatigue include mental fatigue and psychological fatigue. Exertion fatigue is acute in nature, with a rapid onset, short duration and short recovery period, commonly experienced after intense physical exertion or use of mental effort. This type of fatigue is more commonly known as exertion fatigue. It is generally qualitatively different from the fatigue experienced before stroke and can be exacerbated by stress and physical exercise, and responds well to rest, sleep and low temperature. Descriptions of pathological fatigue have included different dimensions of the phenomenon, with problems related to self-control and emotional instability, reduced mental capacity and perceived reduction in energy needed for daily activities such as reading and participating in physical or social activities.
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