Brief Answer:
You should discuss this with your primary doctor. However, as things go...

Detailed Answer:
The typical hand tremor we associate with Parkinson's Disease (PD) is known as a PILL ROLLING TREMOR. This is what it looks like....what a person's hand may appear as when rolling a pill between the fingers. The other very characteristic feature in terms of the tremor in PD is concerned is that in the beginning of the disease process it is typically seen most noticeably when the hands are at REST....which explains why we refer to it as a REST TREMOR or TREMOR AT REST. So, when a person has their hands quietly in their laps watching TV or just speaking with someone the hands can begin to go into this PILL ROLLING appearance of a tremor. When the person extends the arm and prepares the hand for some sort of ACTIVE ENGAGEMENT such as eating, drinking, or trying to use a tool or device.....the tremor almost immediately stops or at least becomes much less.

In what we call an ESSENTIAL TREMOR (ET) or ACTION TREMOR.....exactly the opposite is true when we talk about classic signs and symptoms. Tremors in this scenario are seen most notably when the hands are doing something active like grasping a glass full of liquid and trying to steady it and bringing it to the mouth....or writing with a writing implement, or using the hand to wave at someone or trying to use the hand to guide or steady a tool that may be used to do close in work. In this type of situation a tremor will become more active and more pronounced as the person becomes more and more active with their hands.

Now, in your case...UNFORTUNATELY, in either the REST or ACTION tremor categories ANXIETY, STRESS, FEAR, or other HIGH EMOTIONAL states of mind can worsen the tremors. So that doesn't really help distinguish what type of tremor it may be. Therefore, if anxiety and stress worsen a tremor then, it stands to reason that getting nervous, getting anxious, drinking a lot of caffeine, being very fatigued for staying up all night or performing physically draining activities can EXACERBATE EITHER TYPES of tremor.

I would not use Xanax at your age because there could be other repercussions that you may prefer to avoid such as drops in blood pressure, dizziness, and becoming dependent upon the drug to the point where higher and higher doses would be necessary to fix the problem. Xanax, if given in high enough doses would be expected to calm down either type of tremor....but it is NOT SPECIFIC to the problem as carbidopa/levodopa is to a PARKINSON'S TREMOR......or propranolol/Inderal to an ACTION or ESSENTIAL TREMOR.

In conclusion, if one wished to try a medication by FIRE to tell if a tremor were from a PARKINSON'S condition or not the best medication to try is CARBIDOPA/LEVODOPA. If there is no improvement in the patient's condition within several days at full dose then, the patient has a reduced likely chance of having actually PD.

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