A person’s symptoms may vary depending on the sleep disorder affecting them. People may have difficulty falling asleep or experience low quality, disrupted sleep. The amount of sleep someone needs ...

Advanced sleep phase disorder is a rare condition that causes your natural circadian rhythm, or sleep-wake cycle, to occur earlier than typical. As humans, our sleep-wake cycle— also known as our ...

Q. How do sleep disorder centers evaluate patients? A. Among the tests used by accredited sleep disorder centers is overnight nocturnal polysomnography. This test consists of videotaping and ...

PITTSFIELD — Imagine going to bed at night then waking up a few hours later to find yourself behind the wheel driving a car in the middle of a big city. That symptom is associated with an extreme form ...