I have these same symptoms of sore muscles in various places and also muscle twitches which began in the side of my head (Done an MRI and nothing but sinusitis showed up.. which is weird because I have no symptoms of that..) Anyway the twitches are now ALL over. The more anxious I get the more symptoms I get. Always been the same. Doesn't help when doctors send you in for
MRI with the word "Aneurism???" scribbled on the chart.. I'm still not 100% certain my issues are caused by anxiety but I wouldn't be surprised. Really hope they are because if not I'm sure most of the other options are terrible.