Could your symptoms be due to repetitive motion with maybe some forward head posture and rolled or hunched shoulders?
Tightness in neck/shoulders/upperback?

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My Health Concerns

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pain, tingling in neck, arms and fingers

Could be a possibility, check out our Thoracic outlet syndrome (TOS) forum -
http://neurotalk.psychcentral.com/forum24.html

Lots of helps & tips for RSI's & TOS.