cause to this that the neurologist would be able to identify. I know that this is not a single, simple answer but more of a cascade or flow of the possibilities. I hope that this may shed some light on this unique symptom and hope that you and your mother finds some kind of relief in this information.
Yours in Health,
Dr. Weston Zenner, D.C.
Sounds like age related primary essential tremor but I can’t be sure until she is fully evaluated by her doctor. Could be anything from neurological disorder to idiopathic(unknown). Have her evaluated.
Many people develop a slight tremor as they age and we call that "senile tremor" (which DOES NOT mean your mother is getting dementia), but it does mean the part of the brain that controls her motion is not working as good as it used to. A more serious condition could be something called "Parkinson's". It is a progressive condition and should be taken seriously.
There are other causes, too numerous to list, but that is why you need to consult a professional.
Please consult a neurologist about this, soon.
Dr Robert Arnone