I have neck problems. I can tell you that the cervical spine problems can cause pain in the arms, neck, shoulders, clavicles, shouderblade areas, hands. These are the areas the nerves send signals to. So if they are compressed then it causes problems. But....lyme can cause pain anywhere so it's really hard to say. Having more than one problem just adds more confusion. I ended up having unnecessary surgery due to this confusion.
Hmm, don't know. I haven't had any skeletal issues. Someone else here can probably speak from experience.
And DO hang on to the thought of that 'good day', because they can come again. Glad you had one!