A 32-year-old female client presents to the emergency department with visible signs of distress, including sadness, fatigue, and difficulty concentrating. After a thorough assessment, the nurse identifies her experiencing significant symptoms affecting her daily functioning for the past two weeks. Based on the DSM-5 criteria for diagnosing mood disorders, the nurse must fill in the blank for the following statement:
According to the DSM-5, the client could be diagnosed with a major depressive episode if she exhibits a depressed mood or loss of interest or pleasure in nearly all activities for at least _____.