i keep seeing jagged flashes of lightning bolts that shimmer around an object followed by an intense headache are these hallucinations

This is most likely a manifestation of occipital migraine. It can also rarely be a type of minimal seizure. The next time it happens, if you see the phenomenon in 1/2 of the field of view the same in each eye (cover one eye and then the other), then it is almost certainly migraine. If it does not have this pattern, then you should see a neurologist for evaluation.

The list of possible causes to her symptoms is long. She may even have a central nervous system issue or infection like Lyme disease. Often with a variety of symptoms as hers, you aren't given a diagnosis the first time you're evaluated so she needs to go back and ask the doctor to re-evaluate her for other causes. If you aren't comfortable with the evaluation and diagnosis get another opinion.

You should call your doctor right away or consider going to the ER or urgent care. You may have a viral syndrome or viral meningitis which is a viral infection which can cause these symptoms and much less likely a bacterial infection.

You should see a doctor who will dilate your eyes for examination of the retina. Sometimes, sudden floaters may accompany or precede the development of a tear in the retina. A retinal tear can rapidly progress to a retinal detachment. The lightning streak occurs with traction or pulling on the retina. See a retinal specialist. Avoid retinal detachment.

This sure sounds like menopause. Have you considered that?

Yes, all migraine headaches are triggered by some inner or external event, but it is too onerous to track all if there is no very obvious situation. Rather, why not prevent the episodes, if indeed these are migraines. Try OTC approach, and consider feverfew, butterbur, C0-Q10, riboflavin, magnesium. Try Botox, new dental splints, occipital nerve blocks, biofeedback. Also, prescription meds ?

I don't do primarty care but, anytime you use the word 'severe' the answer is see a doctor. Nothing normal (except possibly childbirth) should be severe.

A migraine itself can cause dizziness and nausea, especially with visual symptoms. Can your dizziness be caused by a migraine? If it occurs often, medications that prevent migraines can also prevent this dizziness if it is the cause.

Sounds like worsening of your daily headaches plus blurry vision. I'd make appointment immediately. Although, it may be nothing serious, there may also be rare but serious conditions such as temporal arteriitis that requires prompt attention.

You should see your ophthalmologist. This is a retinal detachment warning sign.