In such cases, depression is self-sustaining. The symptoms of depression run the gamut from uncomfortable to debilitating. Stemming from a loss of self-confidence, the person gradually feels a sense of guilt, hopelessness, anxiety, pessimism and sadness. The patient is no longer interested in hobbies or other pleasurable activities, suffers a loss of appetite or weight and constantly feels fatigued. Besides suffering from physical symptoms like headaches, disturbed sleep etc., seriously depressed patients also harbour thoughts of death and suicide.
Depression adversely affects a person's social and occupational functioning.
It also affects a person's ability to have positive and healthy interpersonal relationships. A depressed person also finds it difficult to work to his fullest potential. The best way to avoid depression is to engage in a healthy and stress-free lifestyle. Having supportive friends and family also helps. Secondary prevention consists of recognising and admitting that one suffers from depression and seeking treatment for it.