A.L.
I had SEVERE tendonitis in my shoulder, neck and arm .. this , due to many hours a day on a computer for several years.. I went to physical therapy and that didn't do much... massage did help a lot.. but what helped the most was no longer being at a job where I had to use the computer 8 to 10 hrs a day.. my advice, remedy that should now..... if not, it will only get worse.. look online, there are stretches you can do every 20 or 30 mins.. it's important to get up and stretch the entire body as the nerves run from top to bottom.. (often, people just focus on what aches) additionally, make sure your workstation is ergonomically setup as possible.. it's not just the computer that can be a problem.. but other repetitive movements such as reaching to use a mouse or answer a phone..