Thanks for choosing health care magic for posting your query.
I have gone through your question in detail and I can understand what you are going through.
You have mentioned lot many complains and its difficult to pin point a single disease explaining all these issues. A mass in the neck can have many causes and the best way to confirm will be to do a Biopsy
. But first let it be examined by a surgeon.
Your High BP
, hairloss, increased pulse may not be related to your mass in neck.
Hope I am able to answer your concerns.
If you have any further query, I would be glad to help you.
In future if you wish to contact me directly, you can use the below mentioned link:
Wish you good health,
Dr. Srikanth Reddy M.D.