### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
Hi. I am a 45 year old female. I exercise regularly and eat healthily and although I do smoke I consider myself to be physically fit. Over the last couple of months myself and others have noticed that my head shakes and I have no control when it happens. It happens pretty much every day now. I went to my doctors and today I had blood tests for all sorts of things....diabetes, thyroid, bones...because I have a lot of pain in my joints, cholesterol. I suppose my question is would the head shaking be related to any of the things I have been tested for? It does worry me as I work with elderly people and I see it a lot in our clients who have Parkinsons. I am due to go back to my doctors on the 29th of this month for the results of the blood tests but am afraid of what he is going to tell me. Steph

### output:

Head shaking or tremors of the head are much more commonly associated with a condition known as BENIGN ESSENTIAL TREMOR (BET) rather than PARKINSON DISEASE (PD) although some Parkinson's patients certainly do have elements of essential tremor present when the disease is advanced such as head and jaw tremoring....but in benign essential tremor head bobbing or shaking is a common finding.  Blood tests are usually negative for any abnormality if the diagnosis is truly one of either BET or PD. Good luck....it would be very pleasing to me to know that you will quit smoking in this New Year since I can almost guarantee that as physically fit as you are at this time.... I will nearly guarantee feeling ad being able to perform physically nearly 10x better if you would give up the cigarettes....not to mention how money you could donate extra if you'd like to your favorite charity!  ;)I very much doubt you are developing any symptoms consistent with a diagnosis of PD. Anyways, if this answer to your question helped in some small measure would you do me the favor of giving me some written feedback and a STAR RATING. If you'd like to also ask me additional questions about your question of head shaking we can go through a few more things if you'd visit me at:bit.ly/ Chat Doctor.  I will promptly respond to you with answers