Hi Only your neurosurgeon after MRI ;other desired investigation or may be after seeking opinion from other experts will give definite opinion . Such symptoms is known to occour where appliances are used and causes may be sensitivity ;poor quality of appliances suppplied by co.Just few days back an international hip replacement supplying co has been found guilty for supplying faulty applianced and have been heavily fined I am not accusingly the present appliances supplying in present case I am just saying that it may be an un intended fault Neurosurgeon has to take a call on it and look into evey aspect My advice is do not take treatment in your hand and not do not do treatment on guess work Follow instructions and advice of neurosurgeon Get well soon Dr Lal Psychiatrist