<unk>  (or "lack of strength") is a direct term for the inability to exert force with ones muscles to the degree that would be expected given the individual's general physical fitness. A test of strength is often used during a diagnosis of a muscular disorder before the etiology can be identified. Such etiology depends on the type of<unk> , which can be true or perceived as well as variable topically. True<unk>  is substantial, while perceived rather is a sensation of having to put more effort to do the same task. On the other hand, various topic locations for<unk>  are central, neural and peripheral. Central<unk>  is an overall exhaustion of the whole body, while peripheral<unk>  is an exhaustion of individual muscles. Neural<unk>  are somewhere between.<unk>  can be a result of vigorous exercise but abnormal fatigue may be caused by barriers to or interference with the different stages of muscle contraction. In a broader sense,<unk>  is the physical part of fatigue (medical).
Muscle weakness
Muscle spasm
Gastroparesis
Dysuria
Paralysis
Myalgia
Cool extremities
Abdominal enlargement