I have Chronic Headaches and Migraines which I experience near daily varying in severity. I have what I call my 'functioning migraine' which is just a short lasting headache/migraine and I'm more-or-less able to function as normal as possible. Then on the total opposite of my headache/migraine spectrum I can't function at all and I can't stand noise, light or smells and I have to be laid down and stay still and I'm very nauseous too. Along the spectrum of my headaches and migraines they can last anywhere from a few hours to even lasting several days even over a week.
With my headache and migraines I experience a visual aura. The aura is visual symptom or hallucination and for me I often feel like a light I being shone in my eyes, or I see black and white dots that look like fireflies floating around, my vision also blurs or I can have temporary vision loss. I also have other headache/migraine symptoms such as pain, nausea and hypersensitivity. I can also experience loss of motor function such as weakness or temporary loss of movement.