What’s Bipolar Disorder? How Do I Know If I Have It? Symptoms, Causes, Diagnosis, Types, Treatment

Seasonal factors

While seasonal factors are not a direct cause of bipolar disorder but they appear to play a role in the development and onset of bipolar disorder. The chance of bipolar disorder onset increases in the spring season. The swift increase in the periods of bright sunshine might trigger mania and depression by acting on the pineal gland.