What is psychological stress?

There are two basic kinds of stress: psychological stress and physical stress. An infection would be an example of physical stress, whereas someone yelling at you, being demeaning, and threatening abuse are all example of psychological stress. Psychologic stress does have physiologic responses that can lead to physical symptoms and disease and so should not be thought of as not having a huge impact on disease. For example, diabetics under psychological stress may have trouble keeping their blood sugars under control.