Delayed sleep phase syndrome: pathophysiology and treatment options

Area of Science:

• Sleep Medicine
• Chronobiology
• Neuroscience

Background:

• Delayed Sleep Phase Syndrome (DSPS) is a circadian rhythm disorder characterized by a persistent delay in sleep onset and wake times.
• It is thought to arise from an endogenous circadian pacemaker misaligned with societal schedules.
• DSPS often emerges during adolescence but is frequently underdiagnosed or misattributed.

Purpose of the Study:

• To provide a comprehensive review of Delayed Sleep Phase Syndrome (DSPS).
• To highlight the current understanding of its pathophysiology, diagnosis, and treatment.
• To identify key challenges and future research directions for DSPS.

Main Methods:

• Literature review of DSPS, encompassing its relationship with sleep homeostatic and circadian systems.
• Discussion of proposed treatment modalities including phototherapy, chronotherapy, and melatonin.
• Analysis of diagnostic challenges and the need for objective verification.

Main Results:

• DSPS pathophysiology remains poorly understood despite decades of research.
• Current diagnostic methods rely heavily on self-report, lacking objective verification.
• Existing treatments like phototherapy and melatonin lack comprehensive efficacy and mechanism data.

Conclusions:

• Further research is essential to elucidate the precise homeostatic and circadian contributions to DSPS.
• Objective diagnostic tools are needed to improve clinical recognition and accuracy.
• Treatment research must focus on efficacy, effectiveness, and understanding the mechanisms of action for DSPS therapies.