I had this type of symptom prior to being diagnosed with Parkinson's. A neurologist could tell you.
Sri Lankan Ayurvedic medicine can CURE fibromyalgia. I know someone close who took it when diagnosed. Took time, but he is alright now. I hope this information helps you.
I too experience cold feet in connection with the internal tremors. They get cold when the internal tremor begins.
So far I have only managed to read less than half of the postings, but I am intrigued that no one so far seems to have mentioned the likely physiological connection between the internal tremors and inadequate muscle tone.
It seems to me there is only a slight physiological difference between the internal tremor and normal, healthy muscle tone (which we do not notice as a tremor but in fact it is), because recently I experienced internal tremor with a somewhat higher frequency vibration where I felt there was hardly any gap between the peaks. (If I had felt no gap at all then I would not be conscious of the tremor, meaning it would then be normal muscle tone.)
On other occasions the internal tremor has longer gaps between the peaks so that it shows up as a pinging feeling maybe 5 to 10 pings per second.
Another reason to suspect that the internal tremor is actually inadequate muscle tone:- It appears when I lie down and try to go to sleep, or when sleeping and then waking up to it. It disappears on getting up and walking around or standing still, and it very occasionally continues on sitting down. (It may even start when sitting down if close to falling asleep in the sitting position, but not strongly.) Since normal, healthy muscle tone is required to hold our body in (for example) a standing position, and is not needed when we lie down and relax, the internal tremor may be physiologically only slightly different (for chemical, biochemical or electrical reasons such as electrolyte imbalance in the blood) from normal, healthy muscle tone.
Another related comment, on anxiety as a cause:- Anxiety is a standard symptom of several different electrolyte and hormone imbalances in the blood, so in those cases either has a physical not mental cause or they are one and the same and so also physical. When doctors write off internal tremors as anxiety, they are in fact failing to recognise that whether the anxiety is physical or mental in origin, it is showing up as a physical event. They need to ask themselves which they mean, (1) is the internal tremor merely imagined -- not real -- or (2) is it experienced, i.e. a physical event. If it is a physical event (and those of us who experience it know that is exactly what it is) then it must have a basis in the same biochemistry as muscle tone. If it is merely imagined then why are we able to describe it as a symptom that changes with our body position (standing or lying down, and other postural differences mentioned by many sufferers)?
hi, maybe your heat pump system was producing vibrations. i think that all our syntoms are the results of vibrations. i have have many cars near my home and many are tuning speakers ( more powerful ) and they produce low frequency sounds... vibrations. it's a kind of pollution. i'm italian, am a psychologist and i'm studyng about this problem. it's not ansiety caused but cause ansiety. i'm sure that our problem is caused by infrasounds and other low frequencies. how many of you have some source of low frequencies? disco, hi fi car? home theather? something similar... sorry for my english and good luck to everyone :)
I wrote here on 5 August 2014:
"I have been wondering about possible irritation of the sciatic nerve by tightness in the piriformis muscle, but haven't seen an osteopath about that yet."
The osteopath wasn't interested in my suggestion.
A physiotherapist, whom I had consulted about my calf muscle pain, had told me that my piriformis muscles were in spasm.
Eventually, I saw a chiropractor who said it was possible my foot tingling was coming from sciatic nerve irritation, even in the absence of pain down the upper leg.
I finally have pain going down the sides of my upper legs, which has made my soleus calf muscle pain worse. Also, pain in buttocks. Although they were already tender, they hurt now when I sit.
I'm pretty sure the foot buzzing after cycling was caused by pressure on the piriformis muscle caused by the hardness of the saddle.
The spasm above my left hip has got worse.
I am sure now I have Piriformis Syndrome which is a form of sciatica, and suspect this is responsible for the foot tingling.
Hope you find this interesting and that it may enlighten some readers as to the cause of their own symptoms.
It seems to me that the wonderful people who have researched and shared their cures and/or reliefs for our problems include: Magnesium supplements, slapping and stretching, heavy metal testing and detox if indicated, good mattress, pillow and sleeping positions, PCR test for Lyme disease, EMF issues supplement with iodine, magnesium, selenium and sea salt, candida yeast testing and remediation. I may have missed several, but this list does give us hope. Thank you to all who have contributed.