Depression
Depression is another common cause of insomnia as it might cause a chemical imbalance in your brain, which could affect your sleep patterns. Alternately, you might be too distressed by troubling thoughts or fears, which would keep you from having a good sleep at night. Also, insomnia can be triggered by some other mood conditions such as PTSD, anxiety, or bipolar disorder. The best way to deal with this source is to visit a doctor for proper advice and medical treatments. [3]
