Insomnia is a sleeping disorder characterized by persistent difficulty falling asleep or staying asleep despite the opportunity. Insomniacs have been known to complain about being unable to close their eyes or "rest their mind" for more than a few minutes at a time. It's common after the loss of a loved one, even years or decades after the death, if they have not gone through the grieving process.

Insomnia can be caused by: Psychoactive drugs or stimulants, including certain medication, herbs, caffeine, cocaine, ephedrine, amphetamines, methylphenidate, MDMA, methamphetamine and buy modafinil online in Manchester. Hormone shifts such as those that precede menstruation and those during menopause. Psychological problems like fear, stress, anxiety, emotional or mental tension, work problems, financial stress, unsatisfactory sex life. Mental Disorders such as clinical depression, bipolar disorder, general anxiety disorder. Disturbances of the circadian rhythm, such as shift work and jet lag can cause an inability to sleep at some times of the day and excessive sleepiness at other times of the day. Insomnia may be a symptom of magnesium deficiency, or lower magnesium levels.