This sounds a most unpleasant symptom and is not one I'm familiar with. I read elsewhere you have been diagnosed with health anxiety and depression and you have sensations that include headaches, dizziness, neck pain and a heavy feeling in your legs, together with glands and lymph nodes being inflamed and sore muscles, including your back.
These have been diagnosed as being related to your anxiety and depression.
While it is always tempting to just put fresh symptoms down to the same cause I'd strongly suggest you ensure that there is not a physical explanation for this. If it is uncommon your GP may not be familiar with it.
A nuisance, but can pay dividends in eventual peace of mind (not easy at the moment I know). I recently went to the emergency department with chest pain, and had extensive tests, however they came back negative, and anxiety is thought to be the cause.
As you already know anxiety and depression can affect the body greatly, which unfortunately adds to one's overall stress and simply makes things worse.
Please let us know how you go