Transient insomnia: lasts less than four weeks The short-term insomnia: inability to sleep well for four to six months Chronic insomnia: inability to sleep every night or almost every night for more than six months Symptoms of insomnia and transient insomnia in the short term may be caused by stress factors such as job loss, marital problems, personal events and just worry about things.

Insomnia is a psychological disorder that is best recognized as inability to sleep or staying awake for long hours.

Insomnia is irregular wakefulness, inability to sleep or poor quality sleep This problem might cause during daytime, like lack of energy, tiredness, irritability and difficulty concentrating Insomnia is irregular wakefulness, inability to sleep or poor quality sleep.