Increased Fatigue for the reasons usually it provokes, the state may be caused by physical or mental stress, we initially identified. Physical fatigue is associated with the fact that the energy reserves are emptied, and in muscle tissue accumulates lactic acid and ammonium ions.
Provoke physical fatigue can be a significant exercise, disorders of the cardiovascular system, the presence of respiratory diseases, against which the blood flows insufficient oxygen. With regard to mental fatigue, which is also determined by both neuropsychiatric fatigue, it is caused by disturbances in the actual processes related neural regulation. Mental fatigue is manifested in the form of a slow process of information transfer, as well as a violation of sensory perception and motor skills. Often fatigue in this embodiment occurs with prolonged and repetitive activities, as well as the need to process large amounts of information. Mental fatigue can provoke multiple sclerosis, depression. Fatigue can also act as one of the symptoms of a variety of diseases. This can be attributed various chronic diseases, HIV, liver and kidney disease, infectious diseases, cancers, diabetes, tuberculosis.