Is the main issue in your arms - the heaviness, surging sensations?

Any repetitive motion work, forward head/shoulders posture, desk postures work, previous whiplash / neck/shoulder injury in the past?

If so look at our RSI & Thoracic Outlet Syndrome (TOS) forum..
I had weird surging/buzzing sensation in my arms with severe RSI and also overlapped with some TOS symptoms..