Which behavior is indicative of someone suffering from major depressive disorder?

The behavior of being unable to eat or sleep is a significant indicator of someone suffering from major depressive disorder. This condition is characterized by a range of emotional and physical symptoms, with disturbances in appetite and sleep being among the most common. Individuals may experience a lack of interest in food, often leading to weight loss, or they may have a tendency to overeat as a comfort response, but the inability to maintain a regular eating pattern is often connected to the feelings of hopelessness and low energy that accompany depression. Additionally, sleep disturbances are prevalent, which can manifest as insomnia or hypersomnia, further complicating the individual's ability to function day-to-day.

High levels of activity, frequent laughter and joy, and seeking out social interactions generally contradict the symptoms of major depressive disorder. These behaviors are often associated with a more positive emotional state, while those with major depressive disorder tend to withdraw from social interactions and experience a marked decrease in energy and motivation.