Melatonin-responsive headache in delayed sleep phase syndrome: preliminary observations

Area of Science:

• Neurology
• Chronobiology
• Sleep Medicine

Background:

• Delayed sleep phase syndrome (DSPS) is a circadian rhythm disorder characterized by a persistent shift in the sleep-wake cycle.
• Headaches, including tension-type, migraine, and cluster headaches, can co-occur with DSPS, impacting patient quality of life.
• Melatonin, a hormone regulating sleep-wake cycles, has been investigated for its therapeutic potential in various conditions.

Observation:

• This study examined the impact of melatonin (5 mg) on headache occurrence in 30 patients diagnosed with DSPS.
• Patients received melatonin 5 hours prior to their typical dim light melatonin onset (DLMO).
• The study documented changes in headache frequency and severity following melatonin initiation.

Findings:

• A significant reduction in headache frequency and severity was observed across different headache types (tension-type, migraine, cluster) in DSPS patients treated with melatonin.
• Specifically, chronic tension-type headaches resolved within two weeks, disabling migraines decreased substantially, and cluster headache episodes were notably reduced.
• No significant difference in nocturnal melatonin secretion was found between DSPS patients with and without headaches, suggesting melatonin's efficacy is not solely dependent on baseline secretion levels.

Implications:

• Melatonin supplementation may serve as a viable therapeutic option for managing headaches in individuals with delayed sleep phase syndrome.
• The chronobiological action of melatonin, potentially by synchronizing the internal body clock with lifestyle, may underlie its effectiveness in headache relief.
• Further research into the neurobiological mechanisms, including vascular and nociceptive pathways, could elucidate melatonin's role in headache pathophysiology and treatment.