Mental health disorders
Chronic insomnia might associates with the development of certain mental health disorders, which affect the sleep-wake cycle and cause sleep deprivation. These mental health disorders include anxiety and anxiety-related disorders like post-traumatic stress disorder that alters the sleeping schedule badly. The maintenance of good sleep becomes too tricky of the person suffering from these mental health disorders. The person having some depression wakes up too early in the middle of the night and is not able to sleep again.