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Egilius Spierings, Neurology, answeredWeekend headache is often caused by caffeine withdrawal, which leads to the dilation of blood vessels. This type of headache often begins 12 to 24 hours after your last sip of coffee and is apt to develop on weekends, when you delay your first cup of the day or skip coffee entirely. You can easily identify this type of headache by comparing your weekend caffeine intake with your weekday consumption.
While not officially a medical term, “weekend headaches” are a common phenomenon. Weekend headaches are frequently reported by people suffering from migraine and people with migraine frequently have attacks triggered by CHANGE. That change can be oversleeping on weekends, delay in caffeine use and/or breakfast, consumption of alcohol and other changes that may occur on weekends, therefore leading to the concept of a “weekend headache.”