Chronic headache. About once a month.

About 15 years ago, I began experiencing severe, stabbing pain in one eye and one side of my head. The pain was extremely intense and often accompanied by vomiting, sensitivity to light and sound, and marked restlessness. The pain was extremely intense and often made me feel like hitting my head against the wall. The headaches usually started during sleep, and I woke up with peak pain that lasted about 30 minutes, followed by gradual improvement but persistent weakness and exhaustion. These attacks occurred in clusters lasting a few weeks, mainly during winter, with pain-free gaps of one to two years. At one point, I had around 20 episodes in 15 days, sometimes twice daily, with vomiting during nearly every attack. I was diagnosed with migraine, but oral medications were ineffective during severe episodes due to vomiting. In recent years, I have milder, recurrent unilateral headaches every few days, becoming moderate about once a month.