Why is spring in a bad mood?

Hello, spring is the most dangerous season for mental patients. Due to the change of weather, patients' mood fluctuates greatly, which has become the main cause of mental illness. Depression is a common mental illness in spring. Low air pressure in spring can easily lead to disorder of hormone secretion in human brain, and changeable weather can lead to frequent mood fluctuations. Moreover, people are under great pressure in spring. After the Spring Festival, people have good wishes, but nothing has changed in the past few months. People who are introverted or irritable are more likely to be nervous and have symptoms such as anxiety, sleep disorder and loss of appetite.