Hello and thanks for your question. Please allow me to ask you a few questions so I can get a better idea of your circumstances.
Please describe for me in detail what you mean when you said you had a seizure in your right eye, during a migraine. If you would please describe everything about that episode (duration, manner of onset and resolution [slow or sudden onset/resolution], other associated symptoms, and in what way this seizure episode has been different from a regular migraine.
How long did that pain last? How long did the redness last? Were you light sensitive out of that eye when this happened (if so, was it more than you may have with a normal migraine)?
Has your eye ever gotten red and painful like this without a migraine?
Do you get skin rashes, joint pains or ulcers (maybe considered cold sores) in your mouth, nose, or genitalia?
I apologize for all the questions, but your constellation of symptoms are a bit unusual.
When you get this redness and pain, does the vision actually worsen, or do you think it's just tears flooding your eye that cause the vision to worsen?
Do you see halos around lights and/or get nauseous when this happens?
Is it always the same side of the head and the same eye that have this happen?
I think you are experiencing cluster headaches. Cluster headaches are thought to be a neurovascular headache phenomenon which share features with migraine headaches. The intermittent, severe, unilateral eye pain with intermittent redness and tearing associated with the headaches are fairly classic. They also tend to happen more towards the end of your sleep cycle associated with REM sleep.
Alcohol and tobacco have been known to trigger attacks as has extreme temperatures, watching TV, glare, seasonal allergies, and ironically having sex. For many persons, though, there are no triggers and they get them because they get them.
I would recommend having your doctor send you to see a neurologist. Because cluster headaches (as well as migraines) can be mimickers of serious neurological disease, and also because neurologists are the best trained to treat these, I think having an evaluation by a neurologist is important. It sounds as though it has affected your life enough already.
There are typically two categories of treatments available: prophylactic medicines to take everyday and abortive medicines to take once you feel like it is coming on.
Does this help shed a little more light on things?
Does this information help address your concerns? Does this make sense? Do you have any other concerns that I haven't addressed?
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My opinion is solely informative and does not constitute a formal medical opinion or recommendation. For a formal medical opinion and/or recommendation you must see an eye doctor.