https://www.psychologytoday.com/us/blog/love-and-sex-in-the-digital-age/202009/seasonal-affective-disorder-covid-politics-what 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,Continue Reading