A PET scan can compare brain activity during periods of depression (left) with normal brain activity (right). An increase in blue and green colors, along with a decrease in white and yellow areas, shows a decrease in brain activity due to depression.
1) Negative regulations and self-concepts caused by bad childhood experiences. 2) Setbacks and difficulties in study and in life. 3) Social and family environment. 4) Physiological reasons. 5) Character weaknesses.
Adolescence is a phase of life that is accompanied by numerous physical, emotional, psychological and social changes. Unrealistic academic, social or family expectations can create intense feelings of rejection and lead to deep frustration.