Sleep Disorders
If you cannot fall or stay asleep, a sleep issue would be a possible cause. Common sleep disorders that many people experience include insomnia, sleep apnea, parasomnias, narcolepsy, as well as restless legs syndrome. These problems are not uncommon. However, studies have shown that they are likely to go underdiagnosed. If you are suspicious that a sleep disorder makes you cannot sleep, make sure to inform your doctor as soon as possible to get a precise diagnosis and proper treatments. [1]