Active clinical trials for "Sleep Disorders, Circadian Rhythm"

Delayed sleep phase syndrome (DSPS) is the most common of the circadian rhythm sleep disorders (CRSD). A person with DSPS have sufficient sleep quality, but their circadian clock is delayed compared to the normal 24-h period. They fall asleep around 03.00-04.00 at night and sleeps until 02.00-03.00 in the afternoon. This syndrome is most frequent among young people between 16-25 years, which conveys that school attendance and education are affected, and also often results in severe social consequences. DSPS is sometimes associated with depression and personality disorders and may aggravate psychiatric symptoms. This syndrome is highly underdiagnosed and there are no detailed guidelines how to treat it. The treatment usually consists of light therapy, chronotherapy or melatonin. There is a lack of guidelines how often, with which wavelength, and how long the treatment of DSPS patients shall go on. Previous studies shows that light therapy often is effective. The effect gets even better if melatonin is administered concurrently. However, the frequency of relapse is high. Thus, DSPS is a prevalent syndrome in young adults with severe consequences on normal daytime functioning. There are almost no treatment options available in health care settings. There is a clear need for further studies on this topic. The main purpose of the present study is to evaluate the clinical effects of short and long-term treatment by using light therapy and cognitive behaviour therapy (CBT). CBT is recommended at mild to moderate depression and anxiety. It also has some evidence in treating insomnia. Patients with DSPS often have al of these symptoms and therefore the investigators would like to investigate if CBT can enhance the effect of light therapy. Firstly, the investigators want to evaluate the short-term effects of light therapy with and without CBT. Secondly, the investigators want to evaluate if the patients who get CBT maintain a "normal" sleep rhythm and prevent relapse of DSPS compared to just light therapy for two weeks. The investigators also want to evaluate how this patient-group differs when it comes to behavioral factors compared to a matched reference group.

Patients with ADHD often report staying up late on the computer, watching TV, or using other electronic devices, all strong emitters of blue light which may be contributing to the delayed sleep onset times seen in some of these patients. Evening use of polarizing glasses which filter out blue light may decrease the contribution of environmental light late at night to delayed bedtime. This is a treatment that Dr. Fargason uses when patients do not want to use sleep medication to help them fall asleep. The purpose of this study is to evaluate the effectiveness of this treatment by use of sleep diaries and sleep questionnaires.

The purpose of this study is to evaluate the safety of tasimelteon in male and female patients who suffer from Non-24-Hour Sleep-Wake Disorder.

The aim of this placebo-controlled randomized study was to evaluate the efficacy of Circadin™ 2 mg in improving total night sleep duration and stabilizing the circadian clock phase in totally blind subjects with non-24 hour sleep-wake disorder.

The primary objective of this study is to evaluate the safety and tolerability of Armodafinil (CEP-10953) administered on a flexible-dosage regimen of 100 to 250 mg/day for up to 12 months to patients with excessive sleepiness associated with a current diagnosis of narcolepsy, obstructive sleep apnea/hypopnea syndrome (OSAHS)(regular users of nasal continuous positive airway pressure [nCPAP] therapy), or chronic shift work sleep disorder (SWSD).

Circadian rhythms are 24-hour cycles that influence natural functions in the body such as heart rate, blood pressure, and body temperature. Circadian rhythms provide the body with an internal clock and affect sleep patterns. The purpose of this study is to determine the effects of vitamin B12 supplements on circadian rhythms and sleep-wake regulation.

A randomized, double blind sham controlled clinical trial to evaluate the efficacy of vestibular nerve stimulation (VeNS) compared to a sham control a as a means of improving sleep as measured by ISI scores and EEG recordings The purpose of this investigation device study is to collect data that will be used to design appropriate pivotal studies that can be used for regulatory submissions, primarily in the United States of America (USA), but it may also be used to support submissions in other regions, including the European Union (EU).

This study aims to evaluate the effects of aroma massage to sleep quality of the nurses and staff during night shift.

The purpose of this study is to evaluate the maintenance effect and safety of 20 mg tasimelteon versus placebo in subjects suffering from Non-24-Hour Sleep-Wake Disorder.

In this study the investigators will examine the effects of melatonin and light therapy on delayed sleep phase syndrome in adolescents 16 up to 20 years old. 60 subjects will be randomized into four different groups; melatonin + light therapy (N=15), melatonin + placebo light (N=15), placebo + light therapy (N=15) and placebo + placebo light. This is a double-blinded treatment and the participants will receive this treatment for 2 weeks. Then they will be re-randomized into two groups; full treatment with light therapy + melatonin (N=30) and no treatment (N=30) for 3 months unblinded. The investigators will test the subjects pre-treatment, post 2 week treatment and after 3 months.