They include feeling several of the following for at least 2 weeks:
- Feeling sad, anxious, or empty
- Feeling hopeless or pessimistic
- Feeling guilty, worthless, or helpless
- Not enjoying things you used to enjoy
- Trouble with concentration, memory, or making decisions
- Sleeping too much or too little
- Appetite changes
- Gaining or losing weight
- Feeling restless or irritable
- Thoughts of suicide or death