Depression:
Depression (from the Latin depressio, meaning 'oppression', 'shrinkage' or 'dejection') is a mood disorder, characterized by feelings of despondency, unhappiness and guilt, with difficulty enjoying everyday life. It is usually accompanied to a greater or lesser extent by anxiety.
The origin of depression is multifactorial, influencing biological, genetic and psychosocial factors. Environmental factors that increase the risk of depression are the death of a loved one, a move, family conflicts, surgery, psychosocial stress, food intolerance, physical inactivity, obesity, smoking or drug addiction. Among the psychosocial factors, stress and certain negative feelings stand out (a sentimental disappointment, contemplation or experience of an accident, murder or tragedy, bad news, social context, aspects of personality, a near-death experience) or an inadequate preparation of A challenge.