What Could Have Caused Chronic Sinus Issues Who Suddenly Had Severe Dizziness, Forehead Pain, And Flashing Lights At Night?

I have had upper respiratory problems for many years. This has manifested itself with bifrontal and bitemporal pain and lightheadedness and dizziness off and on much of the time. Last nite I was awakened with severe dizziness which was accompanied by severe forehead pain, multi-colored flares of light and feeling of faint. The episode passed in 30-40 seconds but dizziness continued the rest of the night when e.g. turning over in the bed, moving my head abruptly or getting up or lying down again. I experience meniere (sp) episodes from time to time but this session did not feel like one. I use Cyclosporine for Psorisis control but had not used it before going to bed last evening. This is the first time I have experienced anything like the “fireworks”, pain and dizziness I had last nite and though I might get your thoughts on possible causes or treatments. Incidentally, I am 90 years old and have just been declared in excellent health by several doctors after “annual” reviews. Thanks in advance for any thoughts you may have.