headaches
The fact that they come along in batches sounds like cluster headaches - a migraine variant with the visual changes as well .
I would be talking to a neurologist about these. There is some evidence that when attacks occur Oxygen can help.
The suggestion about sleep apnoea and also getting your neck looked at is a good one too. Cervical neck issues commonly trigger headaches.
I don't know about any herbs that help. Have you tried any of the triptan medications?
Graham
|