I believe you meant to say ESSENTIAL tremors? There is no such entity as FEMORAL tremors.
If you have tremors and imprecision in fine motor movements while trying to activate muscles in your left arm, hand, or fingers AND if the left upper extremity is actually perfectly quiet and still when it is in your lap, or hanging to your side and not shaking, bumping, etc. then, you very well may have ESSENTIAL or ACTION tremor
If you such a neurologist
then, they would be able to better make the diagnosis because other things are also possible from what you've described.
I think you have some legitimate concerns if you are a Vietnam Vet if you were exposed to Agent Orange.
If you are certain that your mother was diagnosed with ESSENTIAL TREMOR and now you have the same thing she did then, that very well may be the diagnosis but the possibility of PARKINSON'S does exist in your case so I do believe your best option right now is to get either to a private neurologist if you are able or check-in at your closest VA MEDICAL CENTER for further evaluation.
There are many new changes that have taken place in how vets are diagnosed and treated with your symptoms if they come from that particular war era.
Hope I have answered your query. Let me know if I can assist you further.
Dr Dariush Saghafi, Neurologist