Stress is usually defined as a set of reactions in the body in response to some factor that is triggering the body's imbalance, ie stress is a reaction to a perceived threat. Getting divorced, having a child, the death of a relative, or starting a new job or school can all be causative factors.
The causes of stress can be classified into two groups: internal and external. Internal causes are those linked to the personal characteristics of each individual. The need for recognition at work, for example, can be stressful. External causes are caused by changes, such as the separation or death of a loved one.
