How do you know you have depression?

Explanation:

Not loving the things you used to love, anxiety/stress is worse than usual, not having much energy, staying isolated in your room alone, not talking to friends, suicidal thoughts and crying or not feeling any pain or happiness

The persistent feeling of sadness or loss of interest that characterizes major depression can lead to a range of behavioral and physical symptoms. These may include changes in sleep, appetite, energy level, concentration, daily behavior, or self-esteem.

Explanation:

For a diagnosis of depression, a person needs to have experienced low mood or loss of interest or pleasure in life for at least 2 weeks. Also, they will have experienced at least five of the following symptoms: feelings of sadness, hopelessness, or irritability nearly every day.