Hi there,
Wow, you sound terrified. I know exactly where you're coming from with the fear having grown up watching your mum suffer from fibromyalgia; my mum's family have an awful track record with cancer, so every time I get a spot I think I've got a carcinoma.
I don't mean to suggest that there's nothing wrong, but it sounds like you're making everything ten times worse by panicking. From what I can gather what's actually wrong is pain in your thumbs, pain in your back, "prodding sensations" in your muscles and a temporary eye infection. None of this is saying "brain" to me; in fact, with the exception of the eye thing (which may have been entirely coincidental - we've all had conjunctivitis) what I'm seeing here is simply a problem with your neck.
Now at this point you could go down the route of thinking you have a tumour, a lesion or something similarly awful and of course those things are possible ... but it could also be a bulging disc (probably in the cervical spine as you're having symptoms in your hands and arms), or even simply a trapped nerve. Thing is, you only have to have a slight muscle contracture or a locked vertebral facet in your neck to pinch a nerve that affects all the rest of your body - and certainly the "flash" you experienced in your spine sounds very similar to sciatica, which is a trapped nerve in the lumbar spine.
I would suggest that you see a GOOD physiotherapist, and explain calmly and coolly the physical symptoms you are experiencing. Keep your emotions, your fear and your mum's condition out of it (you'll be taken more seriously that way too), let the physio ask around the symptoms answering clearly and simply without embroidering the facts, and let them draw their own conclusions based PURELY ON THE FACTS. If I were you, I'd see a musculoskeletal physio too, rather than a neurophysio; if they can't work it out and refer you to a neurophysio then fine, but if you go straight to the neuro specialist they'll examine you from a neuro point of view and may miss a very simple physiological explanation for your symptoms.
Best of luck; I haven't meant to play down your fears, but it seems to me that your fear is totally disproportionate to your symptoms in the cold light of day.
My Fybromalgia is caused by the amalgam fillings in my teeth, which it seems can also cause MS Lupus Parkinsons certain types of Cancer Lou Gerhigs disease and a whole other host of nasties. When I had my fillings put in in the early 80´s it seems that they were a combination of Mercury Aluminium and some Nickel.
Gianc my symptoms are almost identical to yours, I was going crazy for 3 yrs I started to believe I was a hypochondriac too after being poked and prodded by so many¨specialists¨. I finally found a Doctor who understood the whole thing and has been treating heavy metal poisoning from fillings for over 25yrs. Please do not rush to get these removed as almost did that and it seems that it would have cost me my life.
In the US you have a guy called Hal Huggins who is also an expert on this subject. Please do research and any questions post them here and I will try to help.
Sarah
Hypochondriacs magnify unusual physical sensations, making a mountain out of a molehill. Generally lack of exercise will put a person in a stew like that. If the docs you're going to see cannot figure you out, consider asking for a minor tranquilizer, and yes take a vit and mineral supplement a couple times a week, and as I said exercise, drink plenty of water, and couple times a month visit a professional massage therapist to get the tension out of your body.
But could very well be your spine is damaged somehow, which a CAT scan will show if anything is amiss and a neurologist can look into that, and the rheumatologist can figure out if you have lyme disease, and the general doc can do labwork to see if anything shows up in your blood like a deficiency or anemia, and he can also determine if your heartrate and blood pressure are normal or not. As for big diseases, they tend to show themselves in a significant way, often with lots of pain.