Health Links Insomnia Everyone has trouble sleeping sometimes. When falling asleep or staying asleep becomes frequent, it can interfere with daily living. Sleep is essential for repair and rejuvenation of the physical and mental self.
Insomnia is defined as either difficulty in initiating or maintaining sleep or both.
One of the most common causes of insomnia is a big change in daily routine. These changes usually involve travel, a job change, illness, or preoccupation with an upcoming change. This type of situational insomnia usually lasts only a few days. Chronic insomnia may be a sign of an underlying illness, most frequently anxiety or depression. These illnesses require proper treatment by a medical professional.