It makes sense that various physical discomforts lead to the mental issues due to the irritability and other negative emotions. Agility also changes. Because of the blood infection, some cells are damaged in the human brain. It causes certain reactions of the nervous system. The person then becomes rather confused, frustrated, and disorganized. Such patient will also lack focus being unable to realize the things are going on around him. This sign belongs to the initial stages of sepsis. It may remind of a regular stress.