Circadian rhythm sleep-wake disorders are a group of conditions in which the timing of an individual’s sleep is disrupted. Circadian rhythms are often referred to as the body’s internal clock or our ...

Idiopathic hypersomnia is a chronic sleep-wake disorder that causes you to feel excessively sleepy during the day, even with a full night’s sleep. Most people experience daytime sleepiness at some ...

It can be hard to get a diagnosis of idiopathic hypersomnia (IH). It’s easy to confuse it with other sleep disorders, such as narcolepsy. But even with a proper diagnosis, there are challenges. People ...

This Journal feature begins with a case vignette highlighting a common clinical problem. Evidence supporting various strategies is then presented, followed by a review of formal guidelines, when they ...

Sleep is essential for healthy functioning. Insomnia disorder is prevalent, affecting around 5 to 10% of the adult population. The primary issue is a subjective complaint of reduced quantity or ...

We all have the same 24 hours in a day, right? Well not actually. Some people suffer from a rare, debilitating disorder that has them living in a nightmare where days and nights just can't peacefully ...

Scientists have found that the amount of sleep you get each night doesn't just result in brain fog and under-eye circles, but ...

Sleep specialist S. Justin Thomas, Ph.D., has grown accustomed to people looking at him as though he is an eight-headed monster. That’s his way of referring to the reaction he gets from patients when ...

Type 2 narcolepsy features excessive daytime sleepiness (EDS) without cataplexy — the sudden loss of muscle tone triggered by emotions that defines type 1. Symptoms are generally milder than type 1.

Before I was diagnosed with bipolar disorder, I didn’t think twice about sleep. I’d always been a night owl, but I went to bed reasonably early. And I never had trouble falling asleep or getting eight ...