SAD symptoms are usually mild to moderate, but they can become severe. The most common symptoms of SAD include:
- Sadness
- Hopelessness
- Social withdrawal
- Pessimism
- Anxiety
- Restlessness
- Irritability
- Loss of interest in normally pleasurable activities (hobbies, socialization, etc.)
- Difficulty concentrating
- Fatigue
- Sleep issues (inability to fall asleep, difficulty waking up, etc.)
- Lack of focus
- Lack of self-care
- Thoughts of death or suicide