Hi, thanks for writing to HCM.
All your symptoms in the given description suggests some form of neurological disturbance.
There are numerous causes that produce symptoms of muscle twithing and electrical shock
like sensations. And, as your symptoms have been of long standing nature, you need to undergo a detailed clinical examination along with appropriate investigations to pin point the cause of your symptoms.
I suggest you to consult a Neurophysician and follow his advice.
Hope this information is helpful. Good day