stress
(stres)
In medicine,
          the body’s response to physical, mental, or emotional
          pressure. Stress causes chemical changes in the body that
          can raise blood pressure, heart rate, and blood sugar
          levels. It may also lead to feelings of frustration,
          anxiety, anger, or depression. Stress can be caused by
          normal life activities or by an event, such as trauma or
          illness. Long-term stress or high levels of stress may lead
          to mental and physical health problems.