I had them for a long time...years and years. I thought they were sinus or tension headaches. A doc prescribed Inderal for another problem, and the headaches went away. It's a blood pressure med, but my BP was normal. I had a familial tremor in my hands, and reached a point where I couldn't sew, eat, or write. The Inderal was for that. It's an old med and cheap in generic. Ask your Doctor about it.