There are many reasons why patients have recently suffered from severe insomnia, physiological factors, psychological factors, disease factors, and dietary factors may all trigger sleep disorders in patients. 1. If the patient smokes, drinks tea, or does strenuous activities before bed, the above-mentioned bad habits may also lead to insomnia. 4. If the patient often stays up late or frequently shifts at night, causing disorders of the plant nerve function, the biological clock is affected, which may also lead to serious insomnia.