Deteriorating academic or working performance
Patients with depression would naturally reduce their social, academic, and working performance as a result of a series of changes in their feelings and way of thinking. They become unsatisfied, filled with negative thoughts, and become oppositional and aggressive, or passive and unresponsive around people. This is a serious problem when they need to interact with others, as in academic or working situations.
Their grades or quality of work starts deteriorating, and they start having more and more days off. As the problem progresses, their work or academic stress becomes higher, and they stop caring about their job or grades.