Welcome to the Migraine and Headaches Forum! This forum is for questions and support regarding migraine and headache issues such as: abdominal
migraines, headaches caused by allergies, cluster headaches,
headaches, headaches in children, migraine headaches, sinus headaches, tension headaches, visual disturbances.
If you ever experience a change in your migraine pattern it is VERY IMPORTANT that you let your doctor know. Please make an appointment with you family doctor, your GP or your neurologist. It is important that they know of any changes in your headache pattern. Although migraines change over time and this is normal, it is still important for your family doctor and your neurologist to have up-to-date information on your medical history and current medical condition.
I am sure you already know this, but the flickering light part of the migraine is called the aura. The visual part of a migraine is usually scintillating scotoma, although it can also include temporary vision loss as well... but, if you do experience temporary vision loss for the first time it is important to see your doctor about this and your eye doctor about this. If you ever experience COMPLETE undiagnosed vision loss for the first time it is important to go to the Emergency department right away. Even though this can be a part of migraine, if it is new and undiagnosed, complete vision loss needs immediate medical attention.
The reason why we get aura and scintillating scotoma and sometimes even partial vision loss during a migraine is because of cortical spreading depression during a migraine, that is when the neurons in the vision area of our brains get hyper excitable for a brief period of time and that is why we see bright lights and sometimes funny shapes. It has nothing to do with our eyes, it is just that our brains are over-active in the vision area because of the migraine... that is really what a migraine is... it is like a little "storm" in the vision area of our brains + our brain stems... and then that area gets tired after the little "storm" for a little while too, and that is what causes all of the symptoms of a migraine.
Some medications such as triptans can interrupt these "storms" by interrupting some of the associated chemical processes that happen in our brains during a migraine. Your family doctor or a neurologist can prescribe you triptans if you are not allergic to triptans or if there isn't any other reason that you can't take triptans. This is why it is so important for you to see your family doctor or your neurologist to let them know your migraine pattern has changed... so that they A. can make sure that these really are migraines (although I think they do sound like migraines personally) and B. so that they can prescribe you migraine medication called triptans to stop the migraine from happening so that you do not have to experience a prolonged aura or the pain that happens after the aura.
Hope that helps. Feel better! Let us know how it goes! :)