A study in the Journal of Neurology revealed that migraine attacks are more common during the day, and the worst symptoms usually occur between April and October.

The study was conducted at the University of Texas, and the study's supervisor, Dr. Mark Borich, said: "Cluster headaches are more likely to occur during the spring and fall, and are related to the sleep cycle, so they occur between evening and morning."

“We were surprised that migraine had such strong daily associations,” Borich added. The circadian association with migraine and cluster headaches may be genetically regulating the body's circadian rhythm, internal circadian clock and sleep, in addition to a host of other factors."

The researchers examined data from 72 previously published studies that focused on how the body's circadian rhythm affects the occurrence of migraine and cluster headache attacks. The data includes an examination of genes involved in circadian rhythm and headache.

The researchers studied the links between hormone production, severe headaches, and the body's biological clock. Two hormones are involved in the circadian rhythm: cortisol; which indicates that it is time to wake up, and melatonin; Which tells the body when to sleep.

Okaz (Jeddah) @OKAZ_online